Malicious Website is Malwarebytes’ generic detection name for websites that were found to be involved in malware campaigns.
Domains and websites blocked as Malicious Website could be involved in many kinds of malware as C2 servers, for hosting malware, or control panels. Sometimes you can find more information by looking up the blocked domain or IP address lsited in the Location column in the Malwarebytes Threat Center.
Malwarebytes blocks Malicious Websites
Malicious Website listed in OneView