We were able to install it properly, although you are right, the instructions in the Bitnami Docs are not fully right.
Instead of doing this:
sudo pip install /path/to/pdfXBlock
You should be doing this:
pip install /path/to/pdfXBlock
In your case, it seems you did not install PDF XBlock when running the tool. Once installed, check that the Python module was successfully installed with the command below:
After you've verified that it's installed, go to edX Studio > Settings -> Advanced Settings, and add "PDF" to the Advanced Module List:
After that, navigate to a Unit, and in Add New Component -> Advanced, you should see this:
I hope it works!