PortalUltra Mac Adware
PortalUltra is the name of a potentially unwanted application that functions as adware or ad-supported software.
PortalUltra is a clone of the AdLoad Mac adware family. It can crop up in the applications list on your Mac and will exhibit features typical of adware and browser hijackers.
Adware is categorized as a class of potentially unwanted applications. As the name suggests, adware will display ads in your favorite browser, generating revenue for the adware's maker along the way.
The issue with this behavior is twofold. On the one hand, adware will usually install quietly on your system, through a software bundle containing the adware app that has poor disclosure of its full contents. The second issue is that a lot of the ads displayed by adware may originate from rogue ad networks.
This means that the ads may link the user to pages that contain questionable content, other potentially unwanted applications, scam pages or other misleading websites.
The combination of those two factors makes the presence of PortalUltra or any other type of adware on your system undesirable. Uninstalling this type of app from your Mac is very easy. Just drag and drop it from your Applications folder to your Trash, then empty the Trash and this should take care of the situation.