Is there a way to determine the url of the image file found in the flash here?
You could use the dev tools in Chrome (Ctrl+Shift+I). It lists all images under the resources tab. Specifically, have a look at the left column under Frames->Folder XYZ->Images or Other.
Another way would be to use Firebug in Firefox. Click on 'Network'->Images, reload the page and it lists you every loaded image.
I tried tineye
It could be one of these