If you absolutely need the exact legacy “F1” file (perhaps for restoring an old printer or document), you must extract it from original Adobe Acrobat 3–5 installation CDs or PostScript printer ROMs – which may violate copyright unless you own the original license.
CID stands for . Adobe developed CID-keyed fonts to bundle massive character sets—such as Chinese, Japanese, Korean (CJK), and complex Unicode glyphs—into compact 16-bit files. cid font f1 normal free download
This means there isn't a single "CID Font F1" that you can just download and install. It is essentially a generic label for whatever font was used in the original document. If you absolutely need the exact legacy “F1”
If the text is English and you need a replacement, standard sans-serif fonts like or Helvetica are often safe bets to use as a substitute if the document allows you to edit the font properties. This means there isn't a single "CID Font
