Document delivery scams: What are they and what’s their goal?

This advisory describes a phone-based social engineering scam where callers posing as a "document delivery service" leave intimidating voicemails to coerce victims into calling back and divulging personal or payment information; signs of the scam include spoofed/local caller IDs, a vague company name, and legalistic language intended to create panic. Malwarebytes reports complainants who lost amounts typically between $100–$500 and provides defensive guidance such as verifying contact details independently, not calling numbers in unsolicited messages, and avoiding sharing personal/payment data.