It is a pre-cracked, compressed version of CorelDRAW X5 that claims to run without installation.
CorelDRAW is a complex suite of tools (CorelDRAW, Photo-Paint, Capture, etc.). In an effort to make the software "portable" and small, repackers often delete files they deem unnecessary. However, this often breaks dependencies. Users frequently report that "portable" versions crash randomly, fail to save files, lack certain fonts, or have non-functional features like PDF export or color management. portable coreldraw x5 repack