Buying the official version ensures you have the latest stability patches and supports the developers for future projects.
Many "mirror" sites use these file names to trick users into downloading trojans or miners. NieRAutomataCPY.part02.rar
This indicates the download was split into multiple compressed archives. You need all parts (Part 01, 02, 03, etc.) in the same folder to extract the game successfully. Buying the official version ensures you have the