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):

} catch (ex) {
          continue;
        }
        
        if (dict.has("ID")) {
          return dict;
        }
        
        trailerDict = dict;
      }
      
      if (trailerDict) {
        return trailerDict;
      }
      
      throw new InvalidPDFException("Invalid PDF structure.");
    },
    readXRef: function XRef_readXRef(recoveryMode) {
      var stream = this.stream;
      
      
      
      const startXRefParsedCache = Object.create(null);
      try {
        while (this.startXRefQueue.length) {
          var startXRef = this.startXRefQueue[0];
          if (startXRefParsedCache[startXRef]) {
            warn("readXRef - skipping XRef table since it was already parsed.");
            this.startXRefQueue.shift();