The file is a "mod" of Mortal Kombat Unchained (the actual PSP game) made to look like Shaolin Monks. Do you already have the installed?
: A collection containing the original Mortal Kombat , Mortal Kombat II , and Mortal Kombat 3 . How to Play Shaolin Monks on Mobile or PC mortal kombat shaolin monks ppsspp iso file download top
If you have the ISO file: