Popups that look very similar to the one Java used to notify users when the content of a site requires the Java plugin to show the full content. But if we follow this particular prompt we get something completely different called Media Downloader The downloaded file is called setup.exe and is recognized by a few scanners that detect this file as potentially unwanted adware. (PUP.Media) It installs a program called Media Downloader version 1.5.25. The other one I want to show you is not actually a pop-up, but a background image that was made to look like one.”]
Source: https://blog.malwarebytes.com/cybercrime/2015/10/this-isnt-the-java-i-ordered/