Popups - Onclickrev

I have had this issue now for a week or longer. When using Safari (on MacBook Pro 2012) some websites and search boxes cause a pop up in another tab that first directs to www.onlickrev.com/******* and then takes me to various different pages that could be for Adobe Flash, MacKeeper, or other random advertisement.

I have done ALL the recommended fixes for issues like this (clearing safari, safe modes, updates, etc) including buying 3 different virus softwares (which doesn't say there is an issue). One suggestion said it could be a hacked router, but I tested on an outside router with the same issue. I even spoke with an "expert" and when his solution didn't fix it, I no longer heard from him. I was told it could be a hack at the website, but this is happening on too many for it to be just one website (?). I am at a loss and I can't imagine this isn't a problem for anyone else. Anyone have a suggestion? I saw a thread for a iPad with this issue, but the thread is incomplete. HELP