The npm package shadowmd version 8.6.87 is part of a large family of malicious forks of the Baileys WhatsApp Web library. These forks inject code that silently subscribes the victim's authenticated WhatsApp account to attacker-controlled channels without user consent. The target channels are obfuscated or dynamically fetched, and the malicious action abuses the installer's WhatsApp session to gain subscribers. The code does not exfiltrate credentials, establish persistence, or execute arbitrary remote code.