How to Add Cut Marks Bleeds to existing PDF?

The crop, bleed, and trim boxes are all the same size. The crop box is defined in the Crop Box dialog box (choose Tools > Print Production > Set Page Boxes). If the artwork contains a bleed, make sure that the crop box is big enough to accommodate the bleed box and other printer marks.

Once it is done, please follow the steps to embed the printer marks in PDF

Choose Tools > Print Production > Add Printer Marks.

Specify the pages to mark.

Specify the marks and settings.

Thanks