While the 7-Zip software itself is highly secure and reviewed by experts, the content of the archive (the "ZoCa028" data) depends entirely on where you downloaded it from. Always scan extracted files with antivirus software.
: Storing large files in a smaller format to save space. ZoCa028.7z
: Use The Unarchiver or similar third-party apps, as the built-in Archive Utility sometimes struggles with .7z files. While the 7-Zip software itself is highly secure