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
"\x01\xDF" + 
      "\x00\x31" + 
      "\x01\x02" + 
      "\x00\x00" + 
      "\x00\x00\x06" +
      String.fromCharCode(properties.fixedPitch ? 0x09 : 0x00) +
      "\x00\x00\x00\x00\x00\x00" + 
      string32(ulUnicodeRange1) + 
      string32(ulUnicodeRange2) + 
      string32(ulUnicodeRange3) + 
      string32(ulUnicodeRange4) + 
      "\x2A\x32\x31\x2A" + 
      string16(properties.italicAngle ? 1 : 0) + 
      string16(firstCharIndex || properties.firstChar) + 
      string16(lastCharIndex || properties.lastChar) + 
      string16(typoAscent) + 
      string16(typoDescent) + 
      "\x00\x64" + 
      string16(winAscent) + 
      string16(winDescent) + 
      "\x00\x00\x00\x00" + 
      "\x00\x00\x00\x00" + 
      string16(properties.xHeight) + 
      string16(properties.capHeight) + 
      string16(0) + 
      string16(firstCharIndex || properties.firstChar) + 
      "\x00\x03"
    ); 
  }
  function createPostTable(properties) {