Attach (recommended) or Link to PDF file here: https://github.com/mozilla/pdf.js/files/7021521/sample.pdf

Configuration:
- Web browser and its version: Chrome
- Operating system and its version: Microsoft
- PDF.js: 2.2.228


What is the expected behavior? 
Embedded PDF Viewer should display right font with all characters

What went wrong? 
![image](https://user-images.githubusercontent.com/89254263/130225854-43467f78-e856-4a42-8e64-94bdfe479053.png)


Is it possible to add some other font? Is it possible to manage what encodings will be used?

Thank you in advantage

Regards Ladislav

t[2427] = 7824;
  t[2428] = 7825;
  t[2429] = 7826;
  t[2430] = 7827;
  t[2433] = 7682;
  t[2678] = 8045;
  t[2679] = 8046;
  t[2830] = 1552;
  t[2838] = 686;
  t[2840] = 751;
  t[2842] = 753;
  t[2843] = 754;
  t[2844] = 755;
  t[2846] = 757;
  t[2856] = 767;
  t[2857] = 848;
  t[2858] = 849;
  t[2862] = 853;
  t[2863] = 854;
  t[2864] = 855;
  t[2865] = 861;
  t[2866] = 862;
  t[2906] = 7460;
  t[2908] = 7462;
  t[2909] = 7463;
  t[2910] = 7464;
  t[2912] = 7466;
  t[2913] = 7467;
  t[2914] = 7468;
  t[2916] = 7470;