Avast Web Shield has blocked a harmful webpage or file

Object: always changes
Infection: URL:Mal
Process: C:\Windows\System32\svchost.exe

I get many of these popups per minute at a time. I’ve run most of the usual scans (malwarebytes,Avast) and it’s found some stuff but these still show up. All the online searches just leads to running these scans so I’m posting to see if I can get specific instructions for this PC.

This is an indication of a hidden/undetected piece of malware and avast preventing it internet access.

This needs further analysis by a malware removal specialist:
Go to this topic http://forum.avast.com/index.php?topic=53253.0 for information on Logs to assist in cleaning malware. Use the information about getting and using the tools and start your own new topic in the Viruses and Worms forum and attach the logs there, not in the LOGS topic.