Attach (recommended) or Link to PDF file here:  [test.pdf](https://akmer.aikucun.com/a94a8fe5ccb19ba61c4c0873d391e987982fbbd3_1616477914120_83.pdf)


Configuration:
- Web browser and its version: chrome 87.0.4280.88
- Operating system and its version: windows10
- PDF.js version: 2.6.347
- Is a browser extension:

Steps to reproduce the problem:
1. just open 

What is the expected behavior? (add screenshot)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/17724610/112087066-473f8f80-8bc8-11eb-8efb-56139ec42a9c.png)

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

const content = buffer.subarray(position, position + contentLength);
          
          
          var xrefTagOffset = skipUntil(content, 0, xrefBytes);
          if (
            xrefTagOffset < contentLength &&
            content[xrefTagOffset + 5] < 64
          ) {
            xrefStms.push(position - stream.start);
            this.xrefstms[position - stream.start] = 1; 
          }
          position += contentLength;
        } else if (
          token.startsWith("trailer") &&
          (token.length === 7 || /\s/.test(token[7]))
        ) {
          trailers.push(position);
          position += skipUntil(buffer, position, startxrefBytes);
        } else {
          position += token.length + 1;
        }
      }
      
      for (let i = 0, ii = xrefStms.length; i < ii; ++i) {
        this.startXRefQueue.push(xrefStms[i]);
        this.readXRef( true);
      }
      
      let trailerDict;
      for (let i = 0, ii = trailers.length; i < ii; ++i) {