Small question if you don't mind me asking how good is Sucuri when scanning website, because I've never heard of Sucuri
You only have to look at some of the results, e,g, the image above. So it at the very least showing what it considers the suspect code rather than just saying it is infected.
If you also look at other evidence, such as the Wepawet link ginen by Pondus, you will see two hidden iframes (I hate anything hidden) and one of those goes to sidinggear.cu.cc. This domain is on the malware domains list,
http://www.malwaredomainlist.com/mdl.php, use the search function.
So when you start to get cumulative instances of infection, suspicion then I would say the evidence is there, the site has most likely been hacked.
Firefox also blocks the sidinggear.cu.cc domain in the hidden iframe, see image.