The Venmo Payment Request Abuse detection rule aims to identify fraudulent payment requests sent via Venmo. Attackers exploit the platform by embedding a phishing mechanism that solicits victims to call a specific phone number included in the message body, leading potentially to financial theft, installation of malware, or ransomware deployment. The rule establishes specific criteria for detection, including the absence of attachments, validation of the sender's email domain against 'venmo.com', and the presence of phrases suggesting fraudulent activity or a request to contact the sender due to unusual account activity. Furthermore, it employs regex patterns to match potential phone number formats, making it capable of identifying various obfuscations that phishers may employ to bypass detection. It utilizes Natural Language Understanding, content, sender analysis, and specific HTML content characteristics in its analysis to effectively recognize attempts at callback phishing and other notable scams.