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It's normal to have unknow links. If you domain is new these can be links that where make in the past since GWT tends to show links to previous owned domains. If not, you should have a lots of other links and should not affect you rankings that much. It's all a matter of proportion. Personnaly I would try to browse the website with useragent turned to Googlebot since .ro sometimes ( most of) means spam/hacking if you not Romania related. Maybe you'll notice you site isn't what it looks like...

sites are moderate popular, the links are keywords links i have other links besides those. around 50 domains link to the sites but the backlinks are 50.000 from the other 47 sites and 100.000 from those 3 sites.