URL: mal - svchost.exe HELP

hello there, since this morning i’m getting a malware infection alert from avast in svchost.exe
last alert was this: [u]http://blackfight.info/4141/RelayDouble_142669288178977.dll[/u]
i’ve already run scans from antimalware softwares but no results. help me please.
thanks.

C:\Users\Sembhi\Downloads\Avast Internet Security 2015 v.10.3.2216.980 Final with license-=TEAM OS=-{HKRG} C:\Users\Sembhi\Downloads\Avast.Internet.Security.2015.v.10.3.2216.980.Final.with.license-=TEAM.OS=.torrent
If this is a crack you can help yourself ... The free version is just as good

it’s just a file but i didn’t installed that i swear, i have the free version of avast

I am assisting you now on the G2G forum