That's a really common malware. And trust me, this isn't an issue with Binance's "copy address button". If this was the case, we would see thousands and even millions worth of BTC being reported stolen.

Like others said, you either have an infected PC (downloaded a "bad" software) or an infected browser (with enough permissions, extensions or scripts - usually used with Tampermonkey or such - can do basically anything in the websites you visit. E.g: change the button JS to copy an predetermined address generated by a hacker). Clean your device, be more careful and move on.