Sorry to say, it looks like your system was compromised with malware. See K.php - a RestApps malicious script for some info. You can try to do some clean-up based on the notes in that thread.
Sorry to say, it looks like your system was compromised with malware. See K.php - a RestApps malicious script for some info. You can try to do some clean-up based on the notes in that thread.