PDF/A Standards: Exporting as PDF/A (Archival) forces font embedding and prevents generic aliasing. Is there a "New" version of this font?
Here’s a minimal working example inside a PDF object structure: cidfontf1 font new
On a Mac, opening the file in Preview and then selecting File > Export as PDF can sometimes "bake" the missing fonts into a new, usable file. PDF/A Standards: Exporting as PDF/A (Archival) forces font