/usr/share/kde4/apps/ is in lightdm-kde-greeter 0.3.2.2-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/kde4/apps/lightdm-kde-greeter/
/usr/share/kde4/apps/lightdm-kde-greeter/themes/
/usr/share/kde4/apps/lightdm-kde-greeter/themes/classic/
/usr/share/kde4/apps/lightdm-kde-greeter/themes/classic/IconButton.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/classic/ScreenManager.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/classic/TextField.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/classic/ToolButton.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/classic/config.ui
/usr/share/kde4/apps/lightdm-kde-greeter/themes/classic/main.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/classic/main.xml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/classic/preview.png
/usr/share/kde4/apps/lightdm-kde-greeter/themes/classic/private/
/usr/share/kde4/apps/lightdm-kde-greeter/themes/classic/private/ButtonShadow.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/classic/private/IconLoader.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/classic/private/TextFieldFocus.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/classic/theme.desktop
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/Face.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/FeedbackLabel.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/ListButton.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/ScreenManager.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/TextField.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/ToolButton.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/config.ui
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/main.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/main.xml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/preview.png
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/private/
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/private/ButtonShadow.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/private/IconLoader.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/private/TextFieldFocus.qml
/usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/theme.desktop