How to fix pages that looks like it may be redirecting

My site was infected with malware. We thought we cleaned it up, now there are some pages on our site that looks like it belongs to us but it doesn’t.

There are links and letters that I did not put in the public page and when I view the page in CMS to make edits everything appears correct.

This leads me to believe our page is being redirected to a page that we don’t have control over.

Help!! Any ideas how to fix this???