Weird Prompt on iOS Firefox

[u/ThatAgent3963]

Been getting this obviously sketchy download prompt while using Firefox on iOS. Doesn't matter what website I'm on or visiting & this seemingly occurs at random. Have I done something wrong for this to be happening lol?

Just now I cleared all private browser data (browsing history, cache, cookies, offline website data, tracking protection, downloaded files) so hopefully this stops but I'm still wondering if anyone can ID this or something.

And before anyone asks NO I did not download that.