Actually your site is hacked just not in the malware sort of way.
Here's the thing: the company that provided you with that theme is 100% non-GPL compatible. They intentionally booby trap the theme so that you (the user) must preserve the links that they get paid for to display on your WordPress installation.
To quote someone much more quotable then I am
Sorry but your chosen theme is not released under GPL. Non GPL products are not welcome in the WordPress community. Official WordPress policy states that all plugins and themes that are publicly released are required to adhere to http://wordpress.org/about/gpl/
Any support requests for non-GPL products are usually ignored, in the interests of supporting the community and its freedoms.
The link that WPyogi provided you explains it in more detail.
We do not support anything from that theme vendor. I actually have a list of web sites that are on my naughty list because they are doing things like this and it just hurts users such as yourself.
What I encourage you to do is avoid garbage themes like that and instead get them from a reputable source.