Adware.BL

Adware.BL is a detection for files thought to be detected as malware. This Tool, normally harmless, still can make way for adware and adware programs to get onto the computer virus. Adware.BL is a relatively commonly found detection tool when found with adware programs on someone's system.

Adware.BL is a pretty recent detection tool. It was first seen by users using Symantec on August 2013. The detection exists in different forms along with its original form on the internet.

Source: https://www.symantec.com/security_response/writeup.jsp?docid=2013-082119-4705-99&tabid=2