Attach (recommended) or Link to PDF file here:
[Hong Kong Aircraft Engineering Company Limited_1511417616.1 2.pdf](https://github.com/mozilla/pdf.js/files/1539395/Hong.Kong.Aircraft.Engineering.Company.Limited_1511417616.1.2.pdf)


Configuration:
- Web browser and its version: Chrome: 63 
- Operating system and its version: windows and macOs
- PDF.js version: 2.0.185
- Is a browser extension: No

Steps to reproduce the problem:
1. Upload the above PDF and search for "article 1"
2. PDF.js showing only **2** match But actually **4** times available.   

What is the expected behavior? (add screenshot)

![screen shot 2017-12-07 at 7](https://user-images.githubusercontent.com/6101789/33720106-ed404576-db88-11e7-9c19-cf6aea74e9f3.png)



What went wrong? (add screenshot)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

"non-existent-named-destination"
      );
      expect(destination).toEqual(null);
    });
    it("gets destinations, from /Names (NameTree) dictionary", async function () {
      const loadingTask = getDocument(buildGetDocumentParams("issue6204.pdf"));
      const pdfDoc = await loadingTask.promise;
      const destinations = await pdfDoc.getDestinations();
      expect(destinations).toEqual({
        "Page.1": [{ num: 1, gen: 0 }, { name: "XYZ" }, 0, 375, null],
        "Page.2": [{ num: 6, gen: 0 }, { name: "XYZ" }, 0, 375, null],
      });
      await loadingTask.destroy();
    });
    it("gets a destination, from /Names (NameTree) dictionary", async function () {
      const loadingTask = getDocument(buildGetDocumentParams("issue6204.pdf"));
      const pdfDoc = await loadingTask.promise;
      const destination = await pdfDoc.getDestination("Page.1");
      expect(destination).toEqual([
        { num: 1, gen: 0 },
        { name: "XYZ" },
        0,
        375,
        null,
      ]);
      await loadingTask.destroy();
    });
    it("gets a non-existent destination, from /Names (NameTree) dictionary", async function () {
      const loadingTask = getDocument(buildGetDocumentParams("issue6204.pdf"));
      const pdfDoc = await loadingTask.promise;