You would have to download the app they spammed with vibrates and let it install.
I've turned off the phone for now, and it's not 6.0, rather it's 6.x (up to date with August 2016 patches IIRC), not sure if that makes a difference. I'm mostly worried about the malware being a drive-by download/infection.
I had to resort to a factory wipe to clean it; it was not a great deal since it was a phone I'd literally today just taken out the box, but if it had been something I had data on and used for a while, it would have been a serious PITA.
I suspect the ad network malware pumper saw the visit spike and decided the traffic volume warranted an exploit delivery instead of their usual junk ad content.