From 2-spyware.com
PUA:Win32/Puwaders.B!ml is a Windows Defender-assigned name for an adware application that has infiltrated your computer. It is based on heuristic analysis, which means that security software detected the potentially unwanted program based on the way it functions rather than its name. As a result, there could be many different apps that are hiding behind the PUA:Win32/Puwaders.B!ml virus name.