How to remove spam pages from a WordPress site?

Question

Google Analytics

Google Analytics began to appear strange user login pages to the site. I went through the pages and realized that this is a spam page. It is not clear how they got to the site, they are not in the posts, I did not find anything sensible on FTP. Here is an example page. Tell me which way to dig? Maybe someone already had something similar?

Answer 1

This referral spam should be excluded at the level filter level .
Data that is already in GA cannot be deleted in any way.

Answer 2

Change passwords wherever possible. And try to find these pages. Through Total Commander you can try to find.

Answer 3

Same problem, don't know what to do.