Attach (recommended) or Link to PDF file here:
[test.pdf](https://github.com/mozilla/pdf.js/files/6270827/test.pdf)
Configuration:
- Web browser and its version:chrome 89
- Operating system and its version:win10
- PDF.js version: 2.4/2.7/2.8 no working
- Is a browser extension: no 

What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/18545199/113852392-1ae26080-97cf-11eb-9dc9-0cecf52d267b.png)

What went wrong? (add screenshot)
![1617791294(1)](https://user-images.githubusercontent.com/18545199/113852355-10c06200-97cf-11eb-8672-598750f1093a.jpg)


console this log : **FormatError: TrueType Collection does not contain "DCWGQU+CambriaMath" font** 

any solution?thanks
codes = range[2];
        var code = codes[0];
        for (j = 1, jj = codes.length; j < jj; ++j) {
          if (codes[j] !== codes[j - 1] + 1) {
            end = range[0] + j - 1;
            format31012 +=
              string32(start) + 
              string32(end) + 
              string32(code); 
            start = end + 1;
            code = codes[j];
          }
        }
        format31012 +=
          string32(start) + 
          string32(range[1]) + 
          string32(code); 
      }
      header31012 =
        "\x00\x0C" + 
        "\x00\x00" + 
        string32(format31012.length + 16) + 
        "\x00\x00\x00\x00" + 
        string32(format31012.length / 12); 
    }
    return (
      cmap +
      "\x00\x04" + 
      string16(format314.length + 4) + 
      format314 +