Thanks Zsolt
I see. The problem is that this website was pretty high in SEO results before the penalty happened, and this domain has too many links – tens of thousand, it is just impossible to discover which links are "bad" and even more harder to remove them... The domain authority is 72 which is pretty high as I see it, PR 4...
so if this is not a sandbox, there is no reason to wait for website to get out of it by himself, so, does it worth to move website to a new domain, as I understand 301 should pass PR, not sure about authority rank...