Ray's DIY Electronics Hobby Projects
Immediately uninstall the app, run a scan with a lightweight antivirus like Malwarebytes (older version still works on KitKat), and change any passwords entered while the app was installed.
Finding a modern PDF reader for Android 4.4.2 (KitKat) can be challenging because most current apps require Android 5.0 or higher Pdf Reader Apk Download For Android 4.4.2
Look for Version 16.x or early 17.x (around 2016-2017). Immediately uninstall the app, run a scan with