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)
expect(typedArrayPdf.length).toEqual(basicApiFileLength);
      const loadingTask = getDocument(typedArrayPdf);
      expect(loadingTask instanceof PDFDocumentLoadingTask).toEqual(true);
      const progressReportedCapability = createPromiseCapability();
      loadingTask.onProgress = function (data) {
        progressReportedCapability.resolve(data);
      };
      const data = await Promise.all([
        loadingTask.promise,
        progressReportedCapability.promise,
      ]);
      expect(data[0] instanceof PDFDocumentProxy).toEqual(true);
      expect(data[1].loaded / data[1].total).toEqual(1);
      await loadingTask.destroy();
    });
    it("creates pdf doc from invalid PDF file", async function () {
      
      const loadingTask = getDocument(buildGetDocumentParams("bug1020226.pdf"));
      expect(loadingTask instanceof PDFDocumentLoadingTask).toEqual(true);
      try {
        await loadingTask.promise;
        
        expect(false).toEqual(true);
      
        expect(reason instanceof InvalidPDFException).toEqual(true);
        expect(reason.message).toEqual("Invalid PDF structure.");
      }
      await loadingTask.destroy();
    });
    it("creates pdf doc from non-existent URL", async function () {