Site hacked, 13.9m clicks, 266m impressions in 7 days

I own a site that sits on a very strong domain, with high domain authority. We usually have 2.5m impressions per day. The site was recently hacked and 10ks of pages were created with spam kws and images that included redirects and what have you. We've cleaned the site. During this attack the site's traffic blew up to 66m impressions a day. In the last 7 days we had 3.9m clicks and 266m impressions, according to search console. Top kw with highest traffic was xnxx, on 6th position. 46m impressions and 742k clicks in 7 days. Next one was xvideos, 6th position, 88k clicks in 7 days. Pornhub 6th position xxx - 9th position Porno - 10th position. How on earth did my nothing to do with sex related site ranked so high for these KWs, and am I sitting on some sort of goldmine that I don't know how to tap into? How can I monetize this?