Virus popup while visiting wikia?

I was visiting wikia, the page closed on its own, I get a pop up saying that my computer needs an anti virus, which it already has one. My computer then opens up a page that looks similar to the page that my folder are located, though the address bar read: http://a dva ncedproavscan7.com/scn1/?id=p3T3zzDuNDIxLjMxLjE5MSZwaWQ9Mzc5czUmdGltZT0xMjYxMUUNPABN (don’t visit the link btw)

Did I get infected with a virus just then and is wikia dangerous? Because from all these virus detections and suspicious events, I’m starting to think so.

You got a infected with a browser hijacker that will open a rogue AV webpage.

Download and Run Malwarebytes Anti-Malware.

I already have malwarebytes(free though), and it always fails to detect anything, though why is it usually specific sites that I get these pop ups though?

A page closing on its own, followed by warning messages- it’s a sign of a drive-by download and insecure software on your computer. Scan with Secunia either online or installed.

Secunia Online Software Inspector (OSI)
Secunia Personal Software Inspector (PSI)

There are other free scanners you can try.

Spybot Search & Destroy
SUPERAntiSpyware Free
a-Squared Free

Download, install and update the programs.
Always select the option to quarantine any malware found rather than delete it, then you will be able to restore files or registry entries wrongly identified as malware- a rare but not unknown event for any malware scanner.