identify & display PDF CropBox?

My quesiton relates to PDF files ... not directly an ImageMagick issue.

I am working with PDF files.
Some of the pages in some of the files have a CropBox that is smaller
than the MediaBox.
ImageMagick tools are properly respecting the parameter -define
pdf:use-cropbox=true

I need to access the CropBox coordinates on a page-by-page basis.
IM "identify" does not seem to support the display of any
format-specific properties like CropBox.

Q: Does anyone have recommendations about how I can extract/display
the CropBox dimensions of pages within a PDF file?


Thanks,
Michael