The keyword "hot" in your search suggests you're looking for a recently uploaded or currently working patch—which is even more dangerous because these files have not yet been flagged by antivirus databases.
Some resellers offer legitimate second-hand Lumion perpetual licenses. Act-3D allows license transfers. You can find version 8, 9, or 10 licenses for under $200 on legal marketplaces like LicenseDeals or through user forums.