A family of Microsoft word processing software products for creating web, email, and print documents.
Hi David,
That usually means Word saved the file as PDF/A. PDF/A forces font embedding and doubles size fast. Rebuild the PDF with PDF/A turned off.
Open the document in Word. Choose File > Save As, pick a folder, set Save as type to PDF, then select More options or the small Options button in that dialog. In the PDF options, make sure the box named ISO 19005-1 compliant (PDF/A) is not checked. Also clear Bitmap text when fonts may not be embedded, then press OK and Save. Reopen the PDF and check File > Properties > Fonts to confirm that nothing is embedded.
Word remembers the last PDF setting you used, so PDF/A can get switched on without you realizing it and every new export will embed fonts. Try the steps above and tell me what you see in the Fonts tab afterward, and I will guide you to the next fix if needed.