This app was mentioned in 7 comments, with an average of 4.71 upvotes
Just so everybody's clear:
This is Photo Editor Pro, the culprit.
This is Photo Editor, which is a bloatware free, no bullshit, feature packed editor that I personally believe to be hands down the best photo editor on the Play Store and the true Photoshop of Android.
(Note how Photo Editor Pro has "run at startup" and "send sticky broadcast" and has NOT implemented runtime permissions, all things that are easy tipoffs of a likely malicious photo editing app. That kind of shit drives me fucking nuts.)
Yeah, sorry, I should have specified, it's Photo Editor Pro by Zentertain.