When you are stuck with a document that shows placeholders like "CIDFont+F1", you have several options to recover the document's intended appearance without searching for a non-existent file.
: Open the PDF in the Mac Preview app and then Export as PDF . This often re-renders the file and fixes placeholder font issues.
Google’s family covers all CJK characters and works perfectly as a replacement for most CID-keyed fonts. It’s open-source, safe, and high-quality. 📥 Download: fonts.google.com/noto