UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/51.0.2704.79 Chrome/51.0.2704.79 Safari/537.36

Example URL:
https://media.blackhat.com/bh-dc-11/Stavrou-Wang/BlackHat_DC_2011_Stavrou_Zhaohui_USB_exploits-Slides.pdf

Steps to reproduce the problem:
1. Open the URL
2. Open page number 2
3. Compare it with what you see in e.g. Evince

Also, other pages have different bullet symbols.

What is the expected behavior?
English text is shown

What went wrong?
Strange symbols are shown, bullets are not displayed.

Does it occur on multiple sites: N/A

Is it a problem with a plugin? Yes PDF plugin

Did this work before? N/A 

Does this work in other browsers? Yes 

Chrome version: 51.0.2704.79  Channel: stable
OS Version: Ubuntu, openbox, #53-Ubuntu SMP Wed Jul 27 16:06:39 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
Flash Version: Shockwave Flash 22.0 r0

Haven't tested on other platforms.

Maybe the bullets caused problems, or missing fonts. But if the fonts are the problem, then does Evince show the characters properly?