For quite some time now (many months, maybe a year or two) I've noticed that when searching for something rather obscure, when there aren't many relevant results, google search nonetheless returns pages full of sort-of relevant looking results which all redirect to some form of spam or malware site. The malicious results are always ranked below any legit results but they are almost always there at the end of page one. For sufficiently obscure search then the crap can fill even the majority of the first page.

The commonality is that they seem to keyword stuff obscure keywords and even phrases (possibly by randomly brute forcing or re-combining text fragments into synthesized sentences.) and they all redirect one or more times, prevent the back button from working and land on some kind of suspicious page that is almost certainly hosting some kind of malware. The only way out is to close the tab and start over. I'd imagine things would be much worse without ublock installed.