From the WF documentation:
Enable HIGH SENSITIVITY scanning (may give false positives)
This will enable several options internally in Wordfence that causes it to do a more thorough scan. It will cause Wordfence to scan file types like log files and backup files that it would normally ignore. Additionally, the scan will search for patterns that resemble, but may not always be, malicious code. Thus, with this scan option enabled, Wordfence will often give false positives. Readme.txt files and readme.md files will be skipped unless “high sensitivity” is enabled.
You have more than 410 URLs on your site – I guarantee it. ANY of the files in your public html directory are technically an URL, and that’s what the High Sensitivity description is alluding to – it will look at MUCH more than it normally does – which also often results in false positives.
It’s likely you’re worrying for nothing, however, have a look at this: https://www.wordfence.com/learn/has-my-site-been-hacked/
More info here >> https://www.wordfence.com/learn/