Don't download those! I believe they are porn scam files. When they show up, click on the triangle to see each file and their IP address. Go to the Tools menu and choose options. Then go to Filters and click the triangle to show another menu. Click on Hosts. Where it says Filter Hosts, enter the IP address for each file and click Add. Then click OK.

More will probably show up in searches. Keep filtering them and eventually they won't show up anymore.