Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application utilpacfunction.exe by PacFunction has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It runs as a separate (within the context of its own process) windows Service named “Util PacFunction”. This file is typically installed with the program PacFunction by Yontoo Technology, Inc. which is a potentially unwanted software program.