Potentially Unwanted Applications (PUA) are applications that are not malicious in the traditional sense of the word but rather, from a user’s perspective, behave in an unwanted manner. There are many different reasons (some obvious and some less so) that cause a user to perceive an application as unwanted.
Why has Avira classified my program, advert or website as a PUA?
Your application's classification as a PUA is the result of your software, advert, or website, exhibiting one or more offending behaviors and/or properties within this (non-exhaustive) list. Note, the list is subject to change over time.