: Calculate MD5/SHA256 hashes to verify integrity and check against databases like VirusTotal .

: Unzip the archive (often requiring a password found in an earlier stage of a CTF). 2. Static Analysis

: Confirm the file type using tools like file or binwalk .

: Checking for hidden data (steganography) or corrupted headers that prevent the file from opening normally.

Providing the source or context will allow for a more detailed step-by-step breakdown.