avast dected virus( Win32:Adloader-AC [trj] ) in hiberfil.sys

hello i scan my pc from linux avast it dected hiberfil.sys as Win32:Adloader-AC [trj] is it false positive or real virus

 

Hiberfil.sys is a hibernation file. Everything in RAM is dumped to this file when PC enters hibernation. So i'd say this isn't a false positive, but it's possible.
Uploading these to VT or Jotti is not practical since the file is the same size as the amount of RAM in the system.

 

thanks guys for your replay

but the problem is file size is 3.2 Gb hiberfil.sys

i just freshly installed genuine vista + KIS withoutfirewall+outpost firewall pro + office 2007 +java i run update in usermode not even admin then i scan it form linux from bitdefender , avg, calmav they all show it clean even updated KIS also show it clean only avast show
dected virus( Win32:Adloader-AC [trj] ) in hiberfil.sys thats why i wonder strange result does any one know how to install avira in fedora linux i want to try with avira aswell