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
if (!proto) {
      proto = [[], []]; 
    }
    var strings = [
      proto[0][0] || "Original licence", 
      proto[0][1] || name, 
      proto[0][2] || "Unknown", 
      proto[0][3] || "uniqueID", 
      proto[0][4] || name, 
      proto[0][5] || "Version 0.11", 
      proto[0][6] || "", 
      proto[0][7] || "Unknown", 
      proto[0][8] || "Unknown", 
      proto[0][9] || "Unknown", 
    ];
    
    
    var stringsUnicode = [];
    var i, ii, j, jj, str;
    for (i = 0, ii = strings.length; i < ii; i++) {
      str = proto[1][i] || strings[i];