Seem that there is yet another attack on your Android phone. It is a Trojan Horse virus that starts out as a GIF wallpaper app and if you made the mistake of agreeing to install the app, the Trojan would have full access to the personal details you store on the device, as well as the ability to send SMS messages to a premium rate number.Check out the following article for more details.

http://nakedsecurity.sophos.com/2012/08/21/nude-wallpaper-apps-infect-thousands-of-android-devices-with-malware/?utm_source=facebook&utm_medium=status+message&utm_campaign=naked+security