I keep getting messages "Infection Blocked"

I’ve seen this message showing up to 12 items at random times. I think it started when I visited a certain big name nonsubscription-based movie/TV viewing site. Here is one of the messages.

URL: http://alwaysisobar.com/4141/BorderlineRunner_142669490042733.dll
Infection: URL:Mal
Process: C:\Windows\System32\svchost.exe

How can I make this stop? Thanks.

Summarahgg

https://forum.avast.com/index.php?topic=53253.0