Why does my website report "The site ahead contains malware" in Google Chrome?
The "The site ahead contains malware" message from Google browsers comes from Safe Browsing reports that they receive and review. The error message means that Google detected malware on your site and to protect Google Chrome users, it does not let users access your website.
Google has further details on addressing the problem here:
There are various steps that Google requires that the Administrator reviews before requesting that their domains are delisted from Google's Safe Browsing database.