How do I delete media downloader malware from macbook air?

Check the links below for options to remove the Adware

http://www.adwaremedic.com/index.php

Remove unwanted adware that displays pop-up ads and graphics on your Mac - Apple Support

You are welcome.

can someone help for these symptoms

Os : 10.11.3

Symptoms : popup on chrome (wonderlandads)

I did search on google and found popups to wonderlandads is adware/malware.

I have scanned my system with Avast / avira and malware bytes . It did not find anything

I checked the extension and did not find any suspicious extension( only lastpass extenstion is there )

I reset the browser , cleared the history and cache, checked the default search and default page all seems to be correct.

The popup is getting very irritating.

How can i identify and remove this adware.

I assume there is some legitimate software that has the adware bundled but i dont know which one.

Please help

Vik