Malicious Word Document with AutoOpen VBA Macro

Office documents remain a top malware delivery vector, and VBA macros are among the oldest and most reliable tricks in the trade. A weaponized .docm file hides a malicious AutoOpen routine: the moment the victim enables macros and opens the document, the embedded VBA executes and can download and run further payloads from a remote server. Because the macro code is obfuscated and packed inside the document's binary structure, signature-based scanners often miss it. This demo uses a benign VBA macro that only launches Calculator, so it is completely safe to run. Deep CDR opens the document in a virtual environment, sanitizes the macro content, and reconstructs a clean file that keeps its formatting but carries no executable code — neutralizing the threat before it reaches the end user.