Hacked & defaced, via Desktop Phishing and with iFrame malcode?

Dreamhost abuse:
Web site defaced. Details: http://sucuri.net/malware/entry/MW:DEFACED:01?v7

See: http://killmalware.com/quizsource.com/#
Re: Any iframes? Yes there are. show.

Just a note, social media buttons often show up here.

See source code: -https://aw-snap.info/file-viewer/?tgt=http%3A%2F%2Fquizsource.com&ref_sel=GSP2&ua_sel=ff&fs=1

For the hidden iFrame: -http://www.hvha.it
Detected libraries:
jquery - 1.11.0 : (active1) -http://www.hvha.it/vendor/jquery-1.11.0.min.js
Info: Severity: medium
https://github.com/jquery/jquery/issues/2432
http://blog.jquery.com/2016/01/08/jquery-2-2-and-1-12-released/
(active) - the library was also found to be active by running code
1 vulnerable library detected

Detection missed completely here: http://zulu.zscaler.com/submission/show/6080566ce628e8003c28054d218dbe41-1478539679

polonus

Nothing from Avast in any way: http://prntscr.com/d4a82x