Help Apps won't uninstall

[Chinaboi]

Hello Androiders. I just bought galaxy samsung s4 zoom from a friend. When i factory reset it, it seems to be okay at first. Then i found this app name pornclub. I wanted to uninstall it but it can't be uninstall. Only can be force stop and disable. I also reset phone for 3 times but it just appear whenever after i reset. Any idea how to clean or reset phone like its newly bought???thanks in advance.

 

[AMOCO]

In order to get rid of it,You are going to have to re flash the stock firmware.Which will get rid of it for good
This should help you here,Even though it says unrooting guide.It will walk you through reinstalling the stock rom(firmware):
http://theunlockr.com/2014/08/18/how-to-unroot-the-samsung-galaxy-s4-zoom/