This definitely looks like a scam.

They did a very nice job on making their fake MEW website look almost identical to the real one but you should take note that the mouse over url redirects you to a different url that attempts to make it appear legit. Also, when you check the site certificate you can see it was issued from GB and MEW is based in the US.

There's certainly too many red flags here to ignore so don't bother with this airdrop they more than likely want to steal your private keys.