Security Master AV is a new fake Antivirus. This rogue drops files on the system and detects them as infected to scare users; files are filled with junk data and do not represent a risk. It replaces My Security Engine, Security Guard, CleanUp Antivirus and Security Antivirus (family link)
Security Master AV comes from fake online scanners and porn sites
If your PC is infected with Security Master AV use MBAM to remove the infection.