VirusTotal - VirusTotal is a free service that analyzes suspicious files and URLs and facilitates the quick...

URLscan.io - urlscan.io is a free service to scan and analyse websites. When a URL is submitted to urlscan.io, an automated process will browse to the URL like a regular user and record the activity that this page navigation creates.

Any.Run - Interactive malware hunting service. Any environments ready for live testing most type of threats.

AbuseIPDB - AbuseIPDB is an IP address blacklist for webmasters and sysadmins to report IP addresses engaging in abusive behavior on their networks, or check the report history of any IP.

MalShare - MalShare is a public malware repository providing access to malware samples that have been reported by users.

Joe Sandbox - Automated Malware Analysis - Development and Licensing of Automated Malware Analysis Tools to Fight Malware