atril software package provides MATE document viewer, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install atril
atril is installed in your system.
Make ensure the atril package were installed using the commands given below,
$ sudo dpkg-query -l | grep atril *
You will get with atril package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | X Window System software |
| Package | atril |
| Version | 1.12.2-1 |
| Description | MATE document viewer |
| Sub Section | X46 |