When trying to render some PDF in the Kendo PDF Viewer it fails to render a number of characters. The characters are from the font "STSong-Light".

The file is also rendered in pdf.js viewer, but it looks like a substitute font is used (is a bit bolder). 

Provide an option for the Kendo UI for Angular PDFViewer to load substitute fonts or alternatively, an option for the developer to provide its own collection of fonts.