PDF printing bug in OS X
This issue now appears to be resolved; previewing documents on ML 10.8.2 now show the PDF's rendered correctly.

I'm not overly sure when this was resolved (it may well be something that was fixed in 10.8.0), but it looks like Apple has implemented a work around for the bad font embedding from Word generated PDF's



The updated PDf you posted is as shown, and works fine under ML.  I've included the URL bar to show it's the right file.