Puadimanager:Win32/Installcore is a potentially unwanted application (PUA) that is classified as adware. It is designed to display unwanted and intrusive advertisements on the infected computer, such as pop-up ads, banners, and in-text ads. Puadimanager:Win32/Installcore can also collect user data and browsing habits to deliver targeted ads. This adware can slow down the infected computer and disrupt the user's browsing experience.