If you suspect there's malware on your domain's website, you can use the following tools.
Google continually monitors Websites across the internet for malware. You can see if they've detected any malware on your Website through the Google Safe Browsing Status at https://www.google.com/transparencyreport/safebrowsing/diagnostic/.
However, this tool does not actively scan your website, nor does it help you remove malware.
GoWebsite offers a product called WebsiteLock that will scan your website for malware. Unlike Google's Safe Browsing tools, WebsiteLock scans your website's files actively and can help you remove malware it finds.
You can find more information and purchase it on our SiteLock Malware Scanner page.