Sadly, the scams are pretty common on the internet. From the early Nigerian Prince scammers to the more modern Tech Support ones, there are always some people trying to trick you into giving your money away.
Today I came across a website with a sadly familiar problem. It had been attacked for malvertising. The curious thing is that the attacker has successfully hijacked the site so it redirects (sometimes) to a site that tries to “convince” you to install a Chrome extension that asks for permission to modify the content of all the sites that you visit. This is the analysis of the problem.