The "Ziperto" tag indicates it was downloaded from the Ziperto website , a known repository for Switch ROMs and backup files. Safety & Reliability
The internal file is in .NSP (Nintendo Submission Package) format, which is the standard digital format used for eShop games and updates.
The file appears to be a compressed archive containing a Nintendo Switch game file, likely Super Mario Bros. 35 or a related title, sourced from the site Ziperto. File Identity & Contents