In 2018, a contractor for a US defense subcontractor downloaded "AutoCAD 2015 Portable" from a hacking forum. The file contained a keylogger. The contractor's login credentials for the company VPN were stolen, leading to a data breach. The contractor was personally sued for $500,000.
A standard software installation involves copying files to Program Files, creating entries in the Windows Registry, and installing dependencies (like .NET Frameworks) on the host machine. Autocad 2015 Portable