Ousaban Banking Trojan Targets Iberian Bank Users with Fake PDF Lures

The Ousaban banking trojan is targeting Windows users in Spain and Portugal with a cunning phishing scheme that uses a fake corrupted PDF to trick victims into downloading its payload. Identified by Fortinet's FortiGuard Labs in May 2026, this malware hides its true intent within an image, aiming to steal banking credentials. This attack highlights a growing trend of sophisticated phishing tactics and underscores the need for heightened cybersecurity awareness and defenses, especially in regions frequently targeted by cybercriminals.