How do I get rid of Studynerdz.com from my phone?

I recently tried to watch a movie online, using my android phone. Some dodgy-looking sites came up, so I shut it down. Now, however, when trying to wipe the cache etc from my phone, something called 'studynerdz' shows up, and no matter what I do, I can't wipe or delete it. It doesn't show up in apps so I can't uninstall it that way. Antivirus/malware sweeps don't detect or remove it. Any help?

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