With respect to the font, I'm not 100% sure what the original is. Using Adobe Capture's Type functionality, the closest I could get was Alverata Informal Black. The original designers also seem to have deconstructed the fonts in order to bend and warp the letters, which I consciously chose to not do.
Flushed the font cache (using Universal TYpe Client), the false positive went away, made 9 new PDFs from troublesome files, and now they are good. The Zapf dingbats was the stars in a USDA symbol, and this all set off a chain of flase positive in Helvetica Neu, so I suspect my font chace had conflcit FOND ID numbers for those two fonts.
We are also facing the same font issue in Adobe Acrobat. But I check the InDesign file there is no font missing status. How I can figure it out this issue and How to solve this type of issue in future.
In examining yet another PDF file sent my way with these symptoms, we found that the underlying problem was in the production of the PDF file. The creator of the PDF file (it wasn't Adobe software or any Adobe PDF libraries) improperly embedded the fonts in terms of both how they were identified (claiming they were TrueType although they were Type 1) and with messed-up encoding tables.
The fix in this particular case was to open the PDF file in Acrobat Pro DC, invoke Preflight, and run the Fix potential font problems profile in the Acrobat Pro DC 2015 Profiles group. This appears to have resolved the problem, at least for this file.
Dyson, M. C., Tam, K., Leake, C. and Kwok, B. (2016)How does expertise contribute to the recognition of Latin and Chinese characters? In: Dyson, M. C. and Suen, C. Y. (eds.) Digital fonts and reading. World Scientific , Singapore, pp. 193-208. ISBN 9789814759533
Ross, F. ORCID: -0002-1094-2961 (2013)Digital typeface design and font development for twenty-first century Bangla language processing. In: Karim, M. A., Kaykobad, M. and Murshed, M. (eds.) Technical Challenges and Design Issues in Bangla Language Processing. IGI Global, Pennsylvania U.S.A., pp. 1-15. doi: -1-4666-3970-6.ch001
Ross, F. ORCID: -0002-1094-2961 (2021)Invisible hands: tracing the origins and development of the Linotype Devanagari digital fonts. Journal of the Printing Historical Society, 3 (2). pp. 111-153. ISSN 0079-5321
Sanocki, T. and Dyson, M. C. (2012)Letter processing and font information during reading: beyond distinctiveness, where vision meets design. Attention, Perception, & Psychophysics, 74 (1). pp. 132-145. ISSN 1943-3921 doi: -011-0220-9
dafc88bca6