As described the application is crashing when you try to open the attached PDF.
Is this a behavior with a particular PDF file or with all the PDFs? Please try to open a different PDF file and check .
I have tried to open the attached PDF with Acrobat Reader DC and its working fine.
Please try to reboot the computer once and check if that makes any difference. Also, please try to repair the installation from the Help menu > Repair Installation.
If it still doesn't work, please try to turn off the protected mode for testing (Windows Only). Go to Edit > Preferences > Enhanced Security > Uncheck 'Enable protected mode at startup', turn off the protected mode and uncheck Enhanced Security > Click OK and reboot the computer.
Note: Please turn on the security after testing to avoid security risks.