Often, only the specific characters used in the document are saved, making the "font" useless for general typing even if extracted. Can You Download These Fonts?
In many cases, these placeholders are actually standard fonts that were "lost" during export: Cid Font F1 F2 F3 F4 F5 Free Download
used in your PDF so you can find the correct legitimate font to download? CIDFont+F1 issue - Adobe Community Often, only the specific characters used in the