The file is the second part of a multi-volume 7-Zip compressed archive.
: You must start the extraction process by opening the .7z.001 file. How to use this file:
: Right-click on the first file ( SS-Ley-007_v.7z.001 ) and select "Extract Here."
Because this is a "split" archive, you cannot open or extract it on its own. To access the contents, you generally need: