If you must see what is inside but remain unsure of its safety, use or a Virtual Machine (VM) . Enable Windows Sandbox in "Windows Features." Copy the file into the Sandbox environment.
If you downloaded this from a known developer or a verified forum (like a gaming mod site or technical community), it may simply be a "split" archive or a version-controlled backup.
Upload the file to VirusTotal to check it against over 70 different antivirus engines simultaneously.
Right-click the file and select "Extract Here" or "Extract to [Folder Name]" .
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