pbm.exe is an executable file that is responsible for launching a certain parasite, loading its main components and running a destructive payload. According to security experts, it is a significant part of PersonalAntiSpy, which is a rogue anti-spyware seeking to make people purchase its fake license. As soon as it enters computer, it starts displaying fake alerts and reports about tens of dangerous viruses. Of course, these threats are invented and are reported only for creating a need of PersonalAntiSpy license. Please, do NOT pay for it because you will lose your money! In addition to that, you may also reveal your credit card details for scammers.
As we have already mentioned, pbm.exe file is installed and used by PersonalAntiSpy. It starts its work as soon as computer becomes active and mostly works in system's background. If you noticed this file there, you should immediately scan the system with reputable anti-spyware and delete pbm.exe with all its malicious components. For that we recommend using RegCure Pro. For completing removal, you should also run Reimage.