To view the CMYK values for the fill color of a SHAPE object in PDF file,please do the following:
1) After you open a PDF file in Foxit PDF Editor (Pro),please go to "Edit" menu> Edit Object > All/Shape tool, right click on a Shape object in PDf file, select Properties option in the pop-up context menu to open the Shape Object Properties dialog box.
2) In the opened Shape Object Properties dialog box,please select Appearance tab, click on the color block icon next to the Fill color to bring up a color palette. The bottom of the color palette will display the fill color of the currently selected shape ,please click on it to bring up the Color window where you can view the CMYK values.