I don't see a way to attach a file in the forum. I've put the file at https://ufile.io/wqunt
It's a 43-page document, and the file sizes get larger for the later pages (they strictly increase from one page to the next, as if it's including data from previous pages). So page 43 is the worst, 42 is second worst, etc.
1. Run XCPro40Demo.
2. Select "Extract pages", click Next.
3. Open the document from the link above.
4. Set "Selected pages" to 43.
5. Select an output doc path and click OK.
The output file is pretty big (~3.3MB).
6. Run PDFXEdit.
7. Open the document from the link above.
8. Document | Extract Pages.
9. Choose Pages = 43.
10. Pick a destination path and click OK.
The output file is ~88KB.