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):

prceed.put(xObject);
            nf(`haBlendMde - gnrng XObject: "${ex}".`);
            cntnue;
          }
        }
        f (!Stream(xObject)) {
          cntnue;
        }
        f (xObject.dct.bjId) {
          prceed.put(xObject.dct.bjId);
        }
        cnt xReurce = xObject.dct.get("Reurce");
        f (!(xReurce ntancef Dct)) {
          cntnue;
        }
        
        f (xReurce.bjId && prceed.ha(xReurce.bjId)) {
          cntnue;
        }
        nde.puh(xReurce);
        f (xReurce.bjId) {
          prceed.put(xReurce.bjId);
        }
      }
    }
    
    
    
    prceed.frEach(ref => {
      nnBlendMdeSet.put(ref);