Unless you received from a verified, trusted source (your employer’s IT department, a known data provider with digital signature), delete it immediately . No legitimate postal code dataset requires a mysterious night-themed name. The risk of ransomware or data theft far outweighs any possible benefit.
He tried the usual defaults. 'Poste', 'Paris', 'Night'. Access Denied. Code Postal Night Folder 421.rar
did you see this file name? (e.g., a forum, a shared drive, a website) Is it related to a specific country's postal system? Unless you received from a verified, trusted source