My antivirus detects 75 tries a day for a sit to be opened on my browser

Some days ago I started getting this popup from my antivirus that some kind of "threat" as been neutrilized, which is great except that I get this popup like 75 times in a day. I have scanned my computer for malware and virus but I can't seem to find the source with my antivirus.

How can I detect where it is and get rid of whatever is trying to open web pages on my computer?