I think I've been scammed - is my adsense account at risk?

Forgive me if this is the wrong section or if this is just a stupid post. I'm new, a web developer trying to get his feet wet in the IM world.

I recently purchased a couple of autoblogs that were advertised as making $500/month each through adsense. They are. More in fact. I'm writing original content for them now, trying to make them legit.

CTR is normal. Looking at the traffic, though there are a couple dozen countries, China makes up about 65% of the traffic. The niches WOULD appeal to asian countries, but it still seems odd. What's most worrying is that the traffic is almost exclusively direct. I don't know if its possible that I installed the GA code incorrectly and that would cause it, or if there's some other potential cause for this, but clearly it's not normal.

My guess at this point is that the traffic is bought and, obviously, advertisers wouldn't be getting their moneys worth. I don't know why it would still be coming weeks after, but whatever. Given the price I bought these at, it definitely seems too good to be true.

My primary question is, if this traffic is fake and there's something evil afoot, would I get a warning and the funds removed from the account or would it just be banned? I do have plans to build my own sites later and utilize adsense, so a lifetime ban would be pretty bad for me.

Thank you.