Pradeo identified 4 new malicious applications embedding the Joker malware and acting as droppers, available for download on Google Play. Joker is categorized as Fleeceware, as its main activity is to subscribe to unwanted paid services or send SMS / make calls to premium numbers, unbeknownst to users. Victims only notice the fraud when receiving their mobile phone invoice, potentially weeks after it started. Users are advised to immediately delete these applications from their smartphones and tablets to avoid fraudulent activities.”]
Source: https://blog.pradeo.com/pradeo-identifies-app-joker-malware-google-play