See: http://killmalware.com/51-aarschot.be/
See: https://www.virustotal.com/en/url/36f62c985620af9a787673bf3ed4fdc4a0c0b679455093b865cf72c50c03954f/analysis/
9 malicious files detected: http://quttera.com/detailed_report/51-aarschot.be
Detected encoded JavaScript code commonly used to hide malicious behaviour.
Known javascript malware. Details: http://labs.sucuri.net/db/malware/malware-entry-mwexploitkitblackhole1?v282.2
Joomla Version
Version does not appear to be latest 3.4.8 - update now.
MBAM blocks site malware.
polonus