Recently there is a new malware on Android device. It works by sending a text message containing instructions as well as a link to download the update. The malware in question, called UpdtBot, was discovered by NQ Mobile Security Research Center estimates that to date the infection of more than 160,000 devices, fortunately, only Chinese. There is still an infection of internal apps Playstore. Once UpdtBot was installed will be able to communicate and send commands to a server control (Command & Control) which will have priority on sending text messages, calls and downloading additional apps.
So you must always stay aleart when installing new app by looking at the review and source.