It is not so easy as it might be… The pdf has probably been optimized to place each group of glyphs at a specific position, so that changing the font would brea

It is not so easy as it might be… The pdf has probably been optimized to place each group of glyphs at a specific position, so that changing the font would break most of the composition. See this: https://superuser.com/questions/166024/substitute-a-font-in-a-pdf-document https://superuser.com/questions/166024/substitute-a-font-in-... It does not solve your problem, though.