Trojan:iPhoneOS/Adthief.A hijacks the advertisement modules used by other installed apps to display its own advertisements.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
Trojan:iPhoneOS/Adthief.A is a library that forms part of a development framework used by app developers on jailbroken iOS devices to create new mobile applications. When present, this component silently hijacks various specified advertisement modules of installed apps on the device to display its own advertisements.
Adthief.A only works on jailbroken iOS devices; unmodified devices are not affected.