I've just installed poppler-utils on your server.
If you want to install MuPDF you can do it with the following commands:
mkdir ~/opt ~/src
cd ~/src
wget https://mupdf.com/downloads/archive/mupdf-1.18.0-source.tar.gz
tar zxf mupdf-1.18.0-source.tar.gz
cd mupdf-1.18.0-source
scl enable devtoolset-9 make HAVE_X11=no HAVE_GLUT=no prefix=$HOME/opt install
Hope this helps 🙂