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):

"invalid first and n parameters for ObjStm stream"
        );
      }
      const parser = new Parser({
        lexer: new Lexer(stream),
        xref: this,
        allowStreams: true,
      });
      const nums = new Array(n);
      
      for (let i = 0; i < n; ++i) {
        const num = parser.getObj();
        if (!Number.isInteger(num)) {
          throw new FormatError(
            `invalid object number in the ObjStm stream: ${num}`
          );
        }
        const offset = parser.getObj();
        if (!Number.isInteger(offset)) {
          throw new FormatError(
            `invalid object offset in the ObjStm stream: ${offset}`
          );
        }
        nums[i] = num;
      }
      const entries = new Array(n);
      
      for (let i = 0; i < n; ++i) {
        const obj = parser.getObj();
        entries[i] = obj;