I use evince, but sometimes Adobe Acrobat software it is mandatory (Madrid administration)
http://www.krizna.com/ubuntu/install-adobe-reader-ubuntu-14-04/
http://ardownload.adobe.com/pub/adobe/reader/unix/9.x/9.5.5/enu/AdbeRdr9.5.5-1_i386linux_enu.deb
dpkg -i does not work
Dependencies
libgtk2.0-0:i386 libatk1.0-0:i386 libcairo2:i386 libgdk-pixbuf2.0-0:i386 libglib2.0-0:i386 libglib2.0-0:i386 libpangocairo-1.0-0:i386 libpangoft2-1.0-0:i386 libpixman-1-0:i386 libxcb-render0:i386 libxcb-shm0:i386 libpango-1.0-0:i386 libharfbuzz0b:i386 libgraphite2-3:i386 libthai0:i386 libdatrie1:i386
With all that packages, installed
Edit:
http://installion.co.uk/ubuntu/xenial/multiverse/n/nspluginwrapper/install/index.html
Not found !?
https://launchpad.net/ubuntu/xenial/+package/nspluginwrapper
https://launchpad.net/ubuntu/xenial/amd64/nspluginwrapper/1.4.4-0ubuntu5
nspluginwrapper depende de nspluginviewer (= 1.4.4-0ubuntu5); sin embargo:
El paquete `nspluginviewer' no está instalado.
And it is not available in xenial amd64
https://launchpad.net/ubuntu/+source/nspluginwrapper/1.4.4-0ubuntu5
But it seems it is ok to use i386 and other version
https://bugs.launchpad.net/ubuntu/+source/nspluginwrapper/+bug/853738
So downloaded and installed from
http://packages.ubuntu.com/wily/i386/nspluginviewer/download
After that
sudo dpkg -i nspluginviewer_1.4.4-0ubuntu5_i386.deb
sudo nspluginwrapper -i /opt/Adobe/Reader9/Browser/intellinux/nppdf.so
nspluginwrapper -l
/usr/lib/mozilla/plugins/npwrapper.nppdf.so
Original plugin: /opt/Adobe/Reader9/Browser/intellinux/nppdf.so
Plugin viewer: /usr/lib/nspluginwrapper/i386/linux/npviewer
Wrapper version string: 1.4.4-1
