TrojanDownloader:PDF/Domepidief.A: what it is and how to remove it
TrojanDownloader:PDF/Domepidief.A is a trojan that enters via spam emails and propagates other viruses, resulting in a infection of multiple threats simultaneously. The malware derived from Emotet virus family, and, while very similar, its distribution method differs slightly.
Facts checked October 6, 2026. Removal steps tested on Windows 11 (26H2) and checked against Microsoft's and the browser makers' current documentation. Sections marked as our earlier report are the original text: they describe the threat as it was then and have not been reviewed since. The 2026 status, the removal steps and the questions are current.
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TrojanDownloader:PDF/Domepidief.A: summary
| Distribution | Spam email with a download link |
|---|---|
| Name | TrojanDownloader:PDF/Domepidief.A |
| Type | Trojan |
| Related | Emotet malware |
| Danger level | High |
| Purpose | Distribute other malware |
| Removal | Scan the PC with security software to find and remove the malware and anything installed with it. Fortect scans Windows for malware and repairs the system files and settings it damaged. Remove it nowTo use the full-featured product, you have to purchase a license for Fortect. The scan is free. |
Show 6 more facts
| Detection names | No Microsoft detection name is known |
|---|---|
| Damage | Not recorded in the old report |
| Symptoms | An unknown program in Installed apps |
| Evidence | 4 write-ups by security sites; details still limited |
| First seen | 24 September 2018 |
| Facts checked | 6 October 2026 |
What TrojanDownloader:PDF/Domepidief.A does on an infected PC
From our report of Sep 2018 · not reviewed since
TrojanDownloader:PDF/Domepidief.A is a virus that infects the system via malicious download link from spam email attachment
TrojanDownloader:PDF/Domepidief.A is a trojan that enters via spam emails and propagates other viruses, resulting in a infection of multiple threats simultaneously.
The malware derived from Emotet virus family, and, while very similar, its distribution method differs slightly. Previous variants of the virus used a very common distribution method - a malicious attachment in spam emails.
This time, however, crooks decided to attach a PDF file (presented as an invoice) that contains a download link to the malicious MS Office document, obfuscating the built-in scanner efficiency, and making the scam more believable. The presence of TrojanDownloader:PDF/Domepidief.A malware might very quickly result in ransomware, crypto-miner or banking trojan infiltration.
TrojanDownloader:PDF/Domepidief.A virus a deceptive and dangerous threat, and is designed to do different things on the infected system. Social engineering campaigns help malware to infect as many machines around the world as possible to be able to perform the following activity:
TrojanDownloader:PDF/Domepidief.A is linked to Emotet virus, which is known to security researchers from 2014 as a banking trojan that is capable of stealing banking information. Additionally, malware is known to perform denial of service attacks (DDoS) attacks on other systems.
TrojanDownloader:PDF/Domepidief.A is a high-risk virus that can perform in many different ways. It spreads when people are tricked to download a document form a download link hidden under "get your invoice" or similar text.
The email content that this trojan use to distribute might look like this:
Those who click on the link, open the PDF file that contains a hyperlink where the payload of malware is hidden. Messages and links might look legitimate as cybercrooks are using - at first - reliable Microsoft files. However, they might not know that these files might be infected with malicious macros that hide TrojanDownloader:PDF/Domepidief.A malware inside.
You need to remove TrojanDownloader:PDF/Domepidief.A immediately because this is a dangerous malware. You should get rid of this virus entirely with your antivirus program. If the trojan is blocking it, the best solution is to reboot your device in Safe Mode and then perform a system scan.
After TrojanDownloader:PDF/Domepidief.A removal, do not forget about certain changes that might have been done to your machine - those need to be reverted. Researchers advise using a PC fixing tool like as soon as the virus is eliminated or fixing Windows Registry manually (the latter should only be performed if you are highly trained in the IT field).
- steal various data about the user;
- collect keystrokes;
- spread other malware;
- steal and use banking credentials;
- mine cryptocurrency.
From our report of Sep 2018 · not reviewed since
Beware of fake invoices, bank statements and similar attachments - they might be injected with malware
Malware developers send hundreds of thousands of spam emails that contain infected files or deceptive links.
Hackers use the most popular document formats, such as PDF, .doc, .html, .txt, and similar. Do not forget that almost any file can be modified and inject the malicious code into your computer.
Alternatively, hyperlinks can lead to websites that host malicious JavaScript. Regardless of which one it is, both result in malware infiltration. That is why spam emails should not be opened casually.
Trojans are not the only type of viruses that are spread using phishing emails. Cyber threats like ransomware, crypto-mining malware and similar dangerous infections can be distributed that way. That is another reason to be extremely careful when handling emails from unknown sources. To prevent infiltration of the virus, follow these simple safety tips:
- Do now allow the file attachment to run Macro function;
- If you need to open the attachment and you are not sure if it is safe, scan in it with anti-malware software;
- Look out for spelling and grammar errors;
- Check the "From" address - it can often look authentic, but differ in a mere one character;
- Use anti-malware software with real-time protection feature;
- Patch your software as soon as updates come out;
- Backup your files.
From our report of Sep 2018 · not reviewed since
More from our earlier report on TrojanDownloader:PDF/Domepidief.A
- Hello, Please find attached your invoice for recent services.
- GET YOUR INVOICE Thank you for your business!
- The contents of this email and any attachments are confidential to the intended recipient.
- They may not be disclosed to or used by or copied in any way by anyone other than the intended recipient.
- If this email is received in error, please delete the email.
How to remove TrojanDownloader:PDF/Domepidief.A
A loader's job is to install other malware, so treat the PC as infected with more than one program until the scans are clean.
Step 1: Delete scheduled tasks that bring it back
Programs like TrojanDownloader:PDF/Domepidief.A add a scheduled task so they return after an uninstall or reopen a page at every sign-in. Start Task Scheduler, open Task Scheduler Library and sort by Last Run Time to see what ran recently.
On the Actions tab, a program in a user folder, a script or a web address is a warning sign; right-click such a task and choose Delete.
Tasks with names copying Google, Edge or Windows updaters but pointing to an odd folder are typical. The tool looks the same in Windows 11 and Windows 10.
Windows 11: Task Scheduler Library, the task selected, the Actions tab shows the file it runs. Full procedure with screenshots: Remove what malware leaves behind in Windows
Step 2: Remove it from startup
Press Ctrl + Shift + Esc to open Task Manager and select Startup apps (Windows 11) or the Startup tab (Windows 10). Disable entries you do not recognise, especially ones with no publisher or with a name that copies a Windows component.
Right-click an entry and choose Open file location to see where it runs from: programs in
%AppData%or%Temp%deserve a closer look. Some entries are not listed there but in the registry Run keys, which the procedure below shows how to check.Full procedure with screenshots: Stop apps from opening at startup On uGetFix
Step 3: Delete the folders left behind
Uninstalling often leaves the program's folders, and some threats reinstall themselves from them.
Press Windows + R, type
%LocalAppData%and press Enter, then do the same for%AppData%and %ProgramData%, and look for folders named after TrojanDownloader:PDF/Domepidief.A, its publisher or created on the day the problem started. Delete those folders, and check C:\Program Files and C:\Program Files (x86) too.If Windows says a file is in use, end it in Task Manager or delete the folder after a restart in Safe Mode. The folders are the same in Windows 11 and Windows 10.
Full procedure with screenshots: Remove what malware leaves behind in Windows
Step 4: Scan the PC, then run the offline scan
A scan finds the parts of TrojanDownloader:PDF/Domepidief.A that the manual steps cannot see. In Windows Security > Virus & threat protection > Scan options, start a Full scan and quarantine what it reports.
Follow it with Microsoft Defender Antivirus (offline scan) > Scan now, which restarts the PC and checks the disk while Windows and the malware are not running.
It takes about 15 minutes and works the same in Windows 11 and Windows 10. If either scan finds something, run the full scan again after removal until it comes back clean.
Windows 11: Windows Security > Virus & threat protection > Scan options. Full procedure with screenshots: Run a Microsoft Defender Offline scan
Step 5: Change passwords from another device and sign out other sessions
TrojanDownloader:PDF/Domepidief.A can copy saved passwords, cookies and session tokens and send them out in seconds, so cleaning the PC does not undo the theft.
Change your passwords on a device that was never infected, starting with the e-mail account, since every other reset goes through it. On each account, end all other sessions and check the recovery e-mail, phone number and forwarding rules.
Then turn on two-step verification. Sign in on the Windows 11 or Windows 10 PC again only after the offline scan is clean.
Full procedure with screenshots: Turn on two-step verification / secure a hacked account
Instructions for each browser and system
The detailed steps for every browser and system this guide covers. Open the one you use.
Manual removal using Safe Mode
Important! →
Manual removal guide might be too complicated for regular computer users. It requires advanced IT knowledge to be performed correctly (if vital system files are removed or damaged, it might result in full Windows compromise), and it also might take hours to complete. Therefore, we highly advise using the automatic method provided above instead.
Step 1. Access Safe Mode with Networking
Manual malware removal should be best performed in the Safe Mode environment.
Windows 7 / Vista / XP
- Click Start > Shutdown > Restart > OK.
- When your computer becomes active, start pressing F8 button (if that does not work, try F2, F12, Del, etc. - it all depends on your motherboard model) multiple times until you see the Advanced Boot Options window.
- Select Safe Mode with Networking from the list.
Windows 10 / Windows 8
- Right-click on Start button and select Settings.
- Scroll down to pick Update & Security.
- On the left side of the window, pick Recovery.
- Now scroll down to find Advanced Startup section.
- Click Restart now.
- Select Troubleshoot.
- Go to Advanced options.
- Select Startup Settings.
- Press Restart.
- Now press 5 or click 5) Enable Safe Mode with Networking.
Step 2. Shut down suspicious processes
Windows Task Manager is a useful tool that shows all the processes running in the background. If malware is running a process, you need to shut it down:
- Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
- Click on More details.
- Scroll down to Background processes section, and look for anything suspicious.
- Right-click and select Open file location.
- Go back to the process, right-click and pick End Task.
- Delete the contents of the malicious folder.
Step 3. Check program Startup
- Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
- Go to Startup tab.
- Right-click on the suspicious program and pick Disable.
Step 4. Delete virus files
Malware-related files can be found in various places within your computer. Here are instructions that could help you find them:
- Type in Disk Cleanup in Windows search and press Enter.
- Select the drive you want to clean (C: is your main drive by default and is likely to be the one that has malicious files in).
- Scroll through the Files to delete list and select the following:
Temporary Internet Files
Downloads
Recycle Bin
Temporary files - Pick Clean up system files.
- You can also look for other malicious files hidden in the following folders (type these entries in Windows Search and press Enter):
%AppData%
%LocalAppData%
%ProgramData%
%WinDir%
After you are finished, reboot the PC in normal mode.
From our report of Sep 2018 · not reviewed since
TrojanDownloader:PDF/Domepidief.A elimination should be done using reputable tools
To properly remove TrojanDownloader:PDF/Domepidief.A and you should use a reputable antivirus program.
Trojans should always be eliminated by using professional tools instead of trying to remove malware manually. Sophisticated cyber threats are created in a way that only qualified cybersecurity specialists can perform a full elimination manually.
Malicious processes can prevent TrojanDownloader:PDF/Domepidief.A removal using automatic tools. In such case, you should enter Safe Mode with Networking and launch the security application from there.
[GI=method-1]Reboot your device in Safe Mode with networking to remove TrojanDownloader:PDF/Domepidief.A:
[GI=method-2]Use System Restore feature as well
After removal: passwords, accounts and prevention
Your passwords after TrojanDownloader:PDF/Domepidief.A
Removing TrojanDownloader:PDF/Domepidief.A does not undo what it may already have sent out while the PC showed trojanDownloader:PDF/Domepidief.A in the list of installed apps.
Treat saved browser passwords and logged-in sessions on this PC as known to the attacker.
From another device, change the e-mail password first and end all its sessions. Then do the same for the bank, PayPal, Microsoft, Google and Apple accounts. Stolen session cookies keep working after a password change until you sign out everywhere.
Move crypto to a new wallet created on a clean device. A step-by-step order for every kind of account is in our guide to account security after an infection.
Stream videos without limitations, no matter where you are
There are multiple parties that could find out almost anything about you by checking your online activity.
While this is highly unlikely, advertisers and tech companies are constantly tracking you online. The first step to privacy should be a secure browser that focuses on tracker reduction to a minimum.
Even if you employ a secure browser, you will not be able to access websites that are restricted due to local government laws or other reasons. In other words, you may not be able to stream Disney+ or US-based Netflix in some countries. To bypass these restrictions, you can employ a powerful VPN, which provides dedicated servers for torrenting and streaming, not slowing you down in the process.
Data backups are important - recover your lost files
Ransomware is one of the biggest threats to personal data.
Once it is executed on a machine, it launches a sophisticated encryption algorithm that locks all your files, although it does not destroy them. The most common misconception is that anti-malware software can return files to their previous states. This is not true, however, and data remains locked after the malicious payload is deleted.
While regular data backups are the only secure method to recover your files after a ransomware attack, tools such as can also be effective and restore at least some of your lost data.
Questions about TrojanDownloader:PDF/Domepidief.A
Can I safely uninstall TrojanDownloader:PDF/Domepidief.A?
If you did not install TrojanDownloader:PDF/Domepidief.A yourself and it is not part of your hardware or a program you rely on, yes. Uninstalling an unwanted program does not harm Windows. Before you do, search the exact name and publisher to be sure it is not a driver tool, a printer utility or a game launcher with an odd name.
Then remove it from Settings, Apps, Installed apps. Ignore any offers or warnings in its uninstaller about losing protection or performance. Afterwards check Startup apps and your browsers for leftovers, and restart once to confirm that it does not reinstall itself.
How do I stop programs like TrojanDownloader:PDF/Domepidief.A from being installed again?
Most unwanted programs arrive through installers, so the fix is in how you install software. Download programs from their official sites or the Microsoft Store, not from download portals or ads above search results. During setup, choose Custom or Advanced installation and untick every extra offer, including browsers, toolbars and optimizers.
Decline update prompts that appear inside other programs unless you know them. In Windows Security, turn on reputation-based protection and potentially unwanted app blocking. These steps would most likely have stopped TrojanDownloader:PDF/Domepidief.A before it reached the app list.
How do I know if my PC has TrojanDownloader:PDF/Domepidief.A?
Often you do not, which is the point of a trojan. Possible signs are an antivirus alert naming TrojanDownloader:PDF/Domepidief.A or a generic trojan detection, unknown programs or scheduled tasks, processes with random names in Task Manager, browser extensions you did not add, security settings turned off, slower performance, or account alerts about logins from unknown places.
The reliable check is a full scan followed by Microsoft Defender's offline scan. If you recently ran a crack, a fake installer or a command a website told you to paste, scan even without symptoms.
Is TrojanDownloader:PDF/Domepidief.A a known trojan?
Not as a documented family, at least not yet. What is known is the visible sign, trojanDownloader:PDF/Domepidief.A in the list of installed apps, which matches a hidden program working for someone else.
New threats are often seen by victims weeks before researchers publish anything about them. Treat TrojanDownloader:PDF/Domepidief.A as you would any trojan:
- remove what starts it
- run an offline scan
- change passwords from another device
If a scan reports a detection name, keep it; it usually reveals the family and whether it is known to download other malware. We update this guide when an analysis appears.
Should I check my other computers too?
Yes, it takes little time and removes doubt. TrojanDownloader:PDF/Domepidief.A itself usually stays on one PC, but the download that carried it may have been copied to other computers, shared drives may hold the same installer, and an attacker who had access could have tried saved passwords on other devices.
Run a full scan on every Windows PC in the home or office, check shared folders for the original download, and change Wi-Fi and router passwords if they were stored on the infected machine.
Should I report TrojanDownloader:PDF/Domepidief.A?
Report it if you lost money, if accounts were taken over, if you are a business, or if the trojan came through a scam call. A police or national cybercrime report gives you a reference number for your bank and insurer and helps link cases.
You do not need to report a trojan that antivirus blocked before it ran. Before reporting, write down the dates, the detection name, file names and any messages or transactions linked to the attack; screenshots of antivirus alerts are useful evidence. The country list is in the report section above.
How dangerous is TrojanDownloader:PDF/Domepidief.A?
Treat it as serious until proven otherwise. The visible sign is trojanDownloader:PDF/Domepidief.A in the list of installed apps, and programs that behave this way often have more abilities than they show:
- copying passwords
- downloading other malware
- giving remote access
Its family is not known yet, so nobody can say which of these it uses. The good news is that the response is the same in every case and takes about an hour:
- cut the network
- remove the startup entry
- run an offline scan
- change passwords from a clean device
If someone had remote control, a full reset is safer.
My antivirus was on. How did a trojan get past it?
Antivirus programs see a file only when it is written or run, and criminals test each new build against popular scanners before release. Detection catches up within hours or days, which is often after the first victims ran it.
Archives with passwords, installers that fetch the malware later, and scripts run through PowerShell make the job harder. That is why behaviour such as downloading cracks or pasting commands matters more than any setting. Keep Windows and Defender updated, and turn on Reputation-based protection in App & browser control.
I found AnyDesk or ScreenConnect that I did not install. Is that TrojanDownloader:PDF/Domepidief.A?
Not necessarily TrojanDownloader:PDF/Domepidief.A, but it is a warning sign. These are legitimate remote support tools, and criminals use them as ready-made backdoors, especially after tech support scams or fake invoice calls.
If you did not install it and no one you trust set it up, uninstall it, change passwords from a clean device and check your bank account. If someone connected to your PC through it, follow the steps for remote access trojans and consider a Windows reset. Installed apps sorted by date shows when it appeared.
Will Fortect remove TrojanDownloader:PDF/Domepidief.A?
Fortect scans Windows for malware and unwanted programs and repairs the system files and settings they change, and its free scan shows what it finds on your PC before you decide anything.
For TrojanDownloader:PDF/Domepidief.A, follow the plan above as well: the browser steps take back permissions and settings that no scanner treats as a threat, and uninstalling the program that brought it removes the source.
Run Microsoft Defender's full scan and, if anything was found, its offline scan as a second opinion. If the symptoms are gone after the plan and both scans are clean, there is nothing more to do.
Sources
- Wikipedia: Ransomware (read October 6, 2026)
- Techtarget: Macro virus (read October 6, 2026)
- Dieviren: Dieviren (read October 6, 2026)
- FTC: How to recognize, remove and avoid malware (read October 6, 2026)
- Microsoft Learn: Microsoft Defender Offline (read October 6, 2026)