What does it show?


Color profile or profiles that can be found in PDF.


How to interpret the result?
If the ICC profile is CMYK, the color space is correct. It does not mean that the ICC profile type is also correct.

ICC color profile embedded in PDF.

What does the warning mean?
ICC color profile of PDF
PDF contains icc color profile.
Most printers do not use the color profile attached to the PDF. If you do not have enough knowledge about color profiles, it can be removed from the PDF because it only increases the size of the PDF.
How the problem could be resolved?
The converters mentioned below can remove Icc color profile from the PDF.
Deleting color profile from PDF.
Deleting color profile from PDF.