This structure is the industry standard for embedding Unicode TrueType fonts into PDFs for several reasons:
CIDFont+F6 is a technical notation representing the marriage of a CID-keyed font structure with Identity encoding. It is the backbone of modern PDF text rendering for non-Latin scripts and complex Unicode documents. While it appears obscure, it is simply the mechanism that ensures a Chinese character, a Cyrillic letter, or an Emoji typed into a document appears exactly the same when the PDF is opened on a different computer. cidfont+f6
When generating PDFs programmatically (e.g., using iText, PDFBox, or ReportLab): This structure is the industry standard for embedding