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A 7-Zip compressed archive . It requires software like 7-Zip or WinZip to open.
Upload the .7z file to VirusTotal . It will scan the file against 70+ antivirus engines. JENNY.7z
Files with simple names like "JENNY" are often found in: A 7-Zip compressed archive
Ask her what is inside before opening it to ensure her account wasn't hacked. delete it immediately . Photos
Once the archive is open, look at the file extensions. If you see .exe , .bat , or .js inside what you thought was a photo folder, delete it immediately .
Photos, documents, or data belonging to an individual named Jenny.
Knowing the source would help me give you a much more specific "review" of its likely contents.