/usr/share/perl5/Gtk2/ is in libgtk2-ex-formfactory-perl 0.66-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/Gtk2/Ex/
/usr/share/perl5/Gtk2/Ex/FormFactory/
/usr/share/perl5/Gtk2/Ex/FormFactory.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Button.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/CheckButton.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/CheckButtonGroup.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Combo.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Container.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Context.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/DialogButtons.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Entry.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/ExecFlow.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Expander.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Form.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/GtkWidget.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/HBox.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/HSeparator.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Image.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Intro.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Label.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Layout.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/List.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Loader.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Menu.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Notebook.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Popup.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/ProgressBar.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Proxy.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/ProxyBuffered.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/RadioButton.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Rules.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Table.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/TextView.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Timestamp.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/ToggleButton.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/VBox.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/VPaned.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/VSeparator.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Widget.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/Window.pm
/usr/share/perl5/Gtk2/Ex/FormFactory/YesNo.pm