I just saw this photo in a Palestinian Arab newspaper:
I didn't see this anywhere else, the source is not given and it might very well be Photoshopped, but it is worth investigating.
UPDATE: Miriam from the Shearim blog knows the scoop - it is Photoshopped, and here is the original picture from FARS next to the altered one:
Islamic State calls for attacks on the West during Ramadan
59 minutes ago