Sir, upload the file to www.virustotal.com , see what turns up.
I also recommend you to download,install,update and scan with Malwarebytes since you mentioned you had 8 other issues, it's possible to have more malware present on the system that dodges Mcafee.
DoZe--Thanks for the help. I uploaded an Ab1 PF file on my computer to Virus Total, but it had never been rated by anyone. It was in Windows/Prefetch. I'm also getting warnings from Spybot that Ab1.exe is being changed. I've denied the changes in the Spybot prompt. I'll try your other advice now. Thanks again.