Calculate the file's SHA-256 hash and search it on VirusTotal to see if it has been previously flagged by security vendors.
Carefully extract the contents in a sandbox environment. If the file requires a password (common in CTFs), check associated challenge prompts for clues. NR.2.zip
There is no widely documented or publicized cybersecurity write-up specifically titled . Calculate the file's SHA-256 hash and search it
Use tools like strings or exiftool to look for hidden metadata or embedded comments within the archive. NR.2.zip