Help please help

[hsnaml]

Please !
Can someone help me about my problem with Galaxy S4.

Well since 4 days when I try to list websites my phone redirects me to some porn websites and downloading aplicattion called
sexyface.apk

Also my phone redirecting me to
usfoc.us and other unwante sites.
i tryed with factory resetting but the same problem steal appearce.
can someone help me ?

Model number : GT- I9505
Android version : 4.4.2
Kernel version : 3.4.0-2309103

 

[Hadron]

Does this help: http://androidforums.com/threads/android-chrome-redirection-virus-malware-adware.878655/