Is there a way to hide malicious google results in Mac?
The Safari web browser has extensions you can load that will warn you about dangerous websites. The one I use is called URL Advisor. Another one is SafeSurf. If you go to "Safari Extensions" under the Safari menu item you can get a list of available extensions.

I don't know for sure about Google Chrome or Firefox but if extensions exist for Safari I feel confident they exist for other browsers as well.