Adobe Acrobat X Standard is displaying some PDFs with garbled text. Help, please.

I've been using Adobe Acrobat X Standard without any issues for a long while.  The other day, I received a PDF, opened it, and the words are garbled.  My co-worker who has the very same software is able to view the document without all the garbage.  I have gone to distiller in an attempt to fix.  No one from IT can seem to fix the problem and I am at my wits end.  I've lost lots of sleep over this.  I was even upgraded to Adobe Acrobat XI and still can review the document but again.  Everyone else can.  Don't mean to go on and on but, I really need the experts out there to assist me with this issue.

I would appreciate any assistance you can provide.  Thank you.