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
header31012 +
      format31012
    );
  }
  function validateOS2Table(os2, file) {
    file.pos = (file.start || 0) + os2.offset;
    var version = file.getUint16();
    
    
    file.skip(60); 
    var selection = file.getUint16();
    if (version < 4 && selection & 0x0300) {
      return false;
    }
    var firstChar = file.getUint16();
    var lastChar = file.getUint16();
    if (firstChar > lastChar) {
      return false;
    }
    file.skip(6); 
    var usWinAscent = file.getUint16();
    if (usWinAscent === 0) {
      
      return false;
    }
    
    os2.data[8] = os2.data[9] = 0; 
    return true;
  }
  function createOS2Table(properties, charstrings, override) {