/usr/share/applications/xpdf.desktop is in xpdf 3.04-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 | [Desktop Entry]
Name=xpdf
GenericName=PDF viewer
Comment=View PDF files
Exec=xpdf
Icon=xpdf
Terminal=false
Type=Application
MimeType=application/pdf;
Categories=Viewer;Graphics;
Keywords=Viewer;Graphics;
|