On #14303, I shared unmodified files from our bug tracker corpus that appeared to cause some problems for pdf.js.  On this issue, I'll attach files that are freshly fuzzed using files from that corpus as seeds.  I avoided files used in #14303 as seeds for these runs  

I haven't done root cause analysis, and I apologize if these are all just triggering the same underlying bug (or that fixed in #14304).  The files are named for their seed file and then the sha-256 of the fuzzed version.

[new-nasties.zip](https://github.com/mozilla/pdf.js/files/7598083/new-nasties.zip)
buildGetDocumentParams("poppler-85140-0.pdf")
      );
      const loadingTask3 = getDocument(
        buildGetDocumentParams("poppler-395-0-fuzzed.pdf")
      );
      const loadingTask4 = getDocument(
        buildGetDocumentParams("GHOSTSCRIPT-698804-1-fuzzed.pdf")
      );
      expect(loadingTask1 instanceof PDFDocumentLoadingTask).toEqual(true);
      expect(loadingTask2 instanceof PDFDocumentLoadingTask).toEqual(true);
      expect(loadingTask3 instanceof PDFDocumentLoadingTask).toEqual(true);
      expect(loadingTask4 instanceof PDFDocumentLoadingTask).toEqual(true);
      const pdfDocument1 = await loadingTask1.promise;
      const pdfDocument2 = await loadingTask2.promise;
      const pdfDocument3 = await loadingTask3.promise;
      const pdfDocument4 = await loadingTask4.promise;
      expect(pdfDocument1.numPages).toEqual(1);
      expect(pdfDocument2.numPages).toEqual(1);
      expect(pdfDocument3.numPages).toEqual(1);
      expect(pdfDocument4.numPages).toEqual(1);
      const pageA = await pdfDocument1.getPage(1);
      expect(pageA instanceof PDFPageProxy).toEqual(true);
      try {
        await pdfDocument2.getPage(1);
        
        expect(false).toEqual(true);
      
        expect(reason instanceof UnknownErrorException).toEqual(true);
        expect(reason.message).toEqual("Bad (uncompressed) XRef entry: 3R");
      }