I was on IKEA.com and clicked on a link, when all of a sudden Avast intercepted harmful code, which I found was weird.
Turns out, that for some reason Chrome inserts third-party ads above my search results after some 10 seconds. It shows in small letters "ads not by this site". The items advertised for are not unrelated to the search results (e.g. furniture ads on IKEA.com) but the links go to results.premium-display.com and apparently include malicious software some way or another. Apart from IKEA, I tried a second-hand marketplace and the same thing happens after some 10 seconds.
The first thing I do, of course, is to check my Chrome add-ons. Nothing there, however.
I've never seen this thing before. And inserting search results right above the search results of "any" page, sounds quite advanced. How do I get rid of this thing? I seem to have it only in Chrome.
I'd better start checking my Windows registry, but thought it'd be interesting to report this right away...