Yesterday I opened a PDF file with Microsoft edge (the file is confirmed safe it's a scan that I made myself) and since then avast went bonkers, it keeps reporting phishing threats blocked, from all the browsers, (never used edge for browsing but it nags me that when I open it goes mad), Svchost2, and sometimes firefox, but a lot less, and all the times the weird blocked site is different.
I ran a complete scan, with malwarebytes too, cleaned the cache of all the browsers, run a cleaning with ccleaner, I don't know what else I need to do.