There is a yellow banner "This file looks suspicious. It might be used to steal your personal information" and an option to "Request a review".
It also says "This file can still be viewed, edited, and shared, but users will see a warning that alerts them that the content may be harmful. These restrictions were put in place because this content violates Google Drive's Phishing policy."
There is no indication of why the file was flagged.
Despite my concerns about a human looking at my personal file, I bit the bullet and clicked review several times but the banner remains after several months. Google support hasn't been helpful even though I'm a paid user.
I have now received 5 emails from "Google Drive Safety" notifying me of this alleged violation.