/usr/share/app-install/desktop/prefixsuffix:prefixsuffix.desktop is in app-install-data 14.04.0.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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X-AppInstall-Package=prefixsuffix
X-AppInstall-Popcon=8
X-AppInstall-Section=universe
Name=PrefixSuffix
Comment=Batch renaming of files.
Exec=prefixsuffix %U
Terminal=false
Type=Application
StartupNotify=true
Icon=prefixsuffix
Categories=Utility;
X-GNOME-DocPath=prefixsuffix/prefixsuffix.xml
X-Ubuntu-Gettext-Domain=app-install-data
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