Invalid pdf structure for a signed file

[luiseufrasio]

Configuration:

• Chrome: 95.0.4638.69 - 64 bits
• Operating system and its version: Windows 10
• PDF.js version: 2.10.377-dist

Attach (recommended) or Link to PDF file here:
test.pdf

• Is a browser extension: No

Steps to reproduce the problem:

1. run the HELLO WORLD github example passing the attached file: https://github.com/mozilla/pdf.js/blob/master/examples/learning/helloworld.html

2. The PDF does NOT load & in Dev tools console we have:
   {
   "message": "Invalid PDF structure.",
   "name": "InvalidPDFException"
   }

What is the expected behavior? (add screenshot)
Show the PDF in the browser like this:

teste_assinado.pdf

What went wrong? (add screenshot)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

[Snuffleupagus]

Attach (recommended) or Link to PDF file here:
test.pdf

That document is damaged enough that it cannot be opened in Adobe Reader either, i.e. the PDF reference implementation, hence this looks for all intents and purposes like a bug in the PDF document itself (rather than in the PDF.js library).