HiddenAds malware disguises itself like a fun or useful application, but exists to serve up intrusive ads outside the app. Users reported they were targeted with ads promoting the games on YouTube. Adware is hidden by design, but there are still steps you can take to protect yourself. Check the apps profile, reviews and to be mindful of extensive device permission requests before downloading anything youre looking at. If an app is a scam, then other users have likely already noticed and left bad reviews.”]
Source: https://blog.avast.com/new-malware-apps-on-google-play-avast