PUP.DownloadAdmin it’s technically not a virus, but it does exhibit plenty of malicious traits, such as rootkit capabilities to hook deep into the operating system, browser hijacking, and in general just interfering with the user experience. The industry generally refers to it as a “PUP,” or potentially unwanted program.
The PUP.DownloadAdmin infection is used to boost advertising revenue, as in the use of blackhat SEO, to inflate a site’s page ranking in search results.