But if you only have the PDF, use Ghostscript to re-embed:
If you are the one creating the PDF, ensure you select in your export settings to prevent this from happening to others.
name type encoding emb sub uni object ID -------------- ------------ ------------ --- --- --- --------- F1 CID Type 0 Identity-H yes no no 4 F2 CID Type 0 Identity-H yes no no 5 F3 CID Type 0 Identity-H yes no no 6
