If I had to guess, I'd say they were just making redirecting .swfs and embedding them..somewhere, not sure where. It's a fairly common phishing method.
Basically what you would do is
1. Create a phishing site
2. Create a tiny flash file that redirects the browser to your phishing site the second it is loaded
3. The user then believes he was sent there by the actual website (blizzard or whoever) and that it's safe to enter your info.
This is extremely useful for the "You need to be logged in to do that" phishers.
More info here:
New exploits target Flash - WOW Insider
Anyway, I could definitely write up a scam for this based off of the method I described briefly above...It's fairly simple. I'm not sure if there'd be any interest though.