Random. Every now and then I check up on some legit projects and sort topics/terraria after last updated, fairly sure I never saw "Terraria-Standalone-LAN-Build-Cracked" before (also remember DC++) and the description "Terraria — full premium build for Windows with pro features unlocked. Gaming Tools Pro Pack" made me think that this was probably a boilerplate used for a bunch of games (there are no features to be unlocked by buying Terraria Pro, it doesn't exist) and maybe part of a bigger campaign.