Download and install the pack corresponding to your operating system. This adds the necessary CJK character sets to your reader. 2. Use a Different PDF Reader

Go to the official Adobe website and download the .

If you have access to an older AutoCAD or DraftSight installer:

To directly answer your query: There is no legitimate standalone font family named "CID Font F1 F2 F3 F4 F5," and any website offering it as a "free download" or "repack" is highly likely to be a scam or distribute malware. These names are actually temporary, generic placeholding labels