I won't pretend to know how those spammers/hackers even found that other site (Never underestimate a hacker/spammer, I guess?), but it sounds pretty bad. Which means that I suspect that the new site will be the one to go to as well. Might visit the original site at random instances, in the odd case that it would return.
Anyway, I was about to ask if you needed help uploading the custom content, but it's like the new site is an exact copy-paste of the old site. It was somewhat surreal!