In Windows, try "printing" the document to a new PDF using the printer. Embed Missing Fonts (Adobe Acrobat Pro) :
: Manually change the font of the problematic text block to a common system font like Arial , Roboto , or Times New Roman within a PDF editor. AI responses may include mistakes. Learn more cid font f1 f2 f3 f4 f5 hot free download
You cannot download a "CIDFont F1" installer because it isn't a standalone commercial font; it is a created by software like InDesign or Illustrator. In Windows, try "printing" the document to a