Compressed RAR archive of about 1.79 MB for the Apple model A1425, a model number that Apple used for the 13-inch MacBook Pro with Retina display. The name gives no logic board number and does not say whether the package holds a schematic, a boardview or both, so open it and check the contents first. Apple logic boards carry an 820-xxxx number silkscreened on the PCB, and that number and its revision should match before you trust any rail names, connector pinouts or component references inside the archive.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @schematicslaptop. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.