The file was only detected when scanning the browser cache afterwards. The site's content can be examined only through third party scanners, malzilla with sandbox and with a special file-viewer also in secure settings (sandboxed, script blocking etc.). To experiment opening such a site in various common browsers is playing out a considerable risk, because malcode could escape the browser, could infect the OS, could interfere with the networksettings etc. etc.
As far as I can see now taking the browser history cache to the chest would be the most secure option, as this malware apparently goes under the detection radar so far. Never go to live malcode directly in one of the main website browsers.....that is playing with fire,
polonus