Fortunately, you do not require a program for converting PDF documents into the CDR format. Nevertheless, the process requires you to pay close attention to its steps. First of all, you should drag-and-drop the content of the PDF onto a new screen in CorelDraw. If the document has multiple pages, you should proceed by copying one page at a time. If CorelDraw does not recognize the original fonts, even if you thought they were installed, then you should choose the appropriate substitutes. The program might require you to change the page size, and it is very important that you should also add a frame for the page.
If the PDF that you are converting mainly contains text, then you should keep in mind that it will appear in the form of artistic text frames. It may be necessary to combine these into a single frame, convert them into a paragraph frame, or alternatively, first combine them, and then convert them into a paragraph frame. You should also verify that the formatting is preserved as in the original document. In the case of images, there is a risk they might not be compressed, or at best, compressed poorly. What is indicated is that you convert them into the bitmap format with their respective resolutions, and then crop them by using a power clip.