From their website :
We last tested the this file on Sep 11, 2015 with 31 different anti-virus and anti-malware programs and services. Out of these tests, the FormatFactory download tested clean 94% of the time.
The VT scan shows very clear that a lot more scanners detect things.
and
we would to point out that FormatFactory was tested with avast Antivirus 8
avast 8? In what year do those people live ?
Do you have pup detection enabled ?
If not, I suggest you enable it.