I tried avast for linux and perform a thorough analysis of my windows 7. It found a virus in pagesfiles.sys and hiberfil.sys (Patched-Ho), but found none running the program from Windows. Panda, Eset also found no virus.
Then, got a Windows 7 checksum checked and installed on another partition formatted thoroughly with 30 days of grace, that is, a clean install, and scan from linux gave me that those files had viruses. When I download updates also detected virus.
Apparently they are false positives in windows 8 on another partition those files have 0 virus.
Possible false positives can occur in Page file and Hibernation file, and is OK just to delete these. These false positives are normally due to remnants of virus / spyware definitions (DAT files) from programs such as Windows Defender, etc.
Thanks and happy new year 