This file is indexed.

/usr/share/kde4/config.kcfg/pdfsettings.kcfg is in okular 4:16.08.2-1+deb9u1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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<?xml version="1.0" encoding="UTF-8"?>
<kcfg xmlns="http://www.kde.org/standards/kcfg/1.0"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.kde.org/standards/kcfg/1.0
      http://www.kde.org/standards/kcfg/1.0/kcfg.xsd" >
    <kcfgfile name="okular-generator-popplerrc"/>
    <group name="General">
        <entry key="EnhanceThinLines" type="Enum" >
            <default>No</default>
            <choices>
                <choice name="No" />
                <choice name="Solid" />
                <choice name="Shape" />
            </choices>
        </entry>
    </group>
</kcfg>
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