It sounds like you're referring to a involving something like urllogpasstxt and a link — possibly related to extracting or handling URL/login/password data from a .txt file or similar.
Platforms like Pastebin, Rentry, and similar text-hosting services are frequently abused to host snippets of urllogpasstxt lists. urllogpasstxt link
Once an attacker uses a to download a fresh log file, they deploy automated software—known as account checkers or credential stuffers—to weaponize the information. It sounds like you're referring to a involving