Poppler is all working fine for regular PDF documents, but I work with asian documents as well and Japanese support is not working out of the box. It requires poppler-data to be installed in /usr/share. This should be packaged by default.
After doing this however, Japanese font support works but in the case of my documents, the roman characters written through Japanese fonts are still not displayed. This does not happen on other distros when poppler-data is installed. Note that opening the same document through Firefox's pdf,js makes it display properly, so this is really a desktop application configuration issue.