The Durak Card Game app, developed by the "company" Pocket Games Ltd, has been downloaded from Google Play Store around 10 million times, according to Google. After too many complaints from users, security analyst Filip Chytry of Avast started looking into the app and discovered that it has been developed in such a way as to serve strange ads (adware) in places unusual. 
The software waits for 30 days before the launch of aggressive spam with ads, the researcher says. This makes it impossible to link the application installation to that behavior.
"Every time you unlock your device, an ad will appear. It will warn you of a problem, e.g. that your device is infected, for an adult dating site or even porn. "This, of course, is a lie," Chytry told a post on the Avast blog.
"Then he will ask you to do something. But if you agree it will direct you to fake pages, which contain applications that try to send an SMS message behind your back or to applications that collect your data. ”
Of course, very worrying is that the application is widely used. In less than three months, 10 has descended millions of times. Avast claims there are other applications, such as an IQ tester, which also serve ads.
Google has already removed the malicious app from the Play Store.
To hash algorithm (SHA256) αν συναντήσετε την εφαρμογή κάπου αλλού είναι: BDFBF9DE49E71331FFDFD04839B2B0810802F8C8BB9BE93B5A7E370958762836 9502DFC2D14C962CF1A1A9CDF01BD56416E60DAFC088BC54C177096D033410ED FCF88C8268A7AC97BF10C323EB2828E2025FEEA13CDC6554770E7591CDED462D
