Url not from media folder?

The CMS Questions
3

Something like this will do it:

'components' => [
    'file::url' => function (Kirby $kirby, $file) {
      $page = $file->parent();
      if ($file->extension() == 'pdf') {
        return $kirby->url() . '/content/' . $page->diruri() . '/' . $file->filename();
      } else {
        return $file->mediaurl();
      }
    }
]

Will serve PDF files directly from the content folder, whilst allowing normal behaviour for other file types. Tweak the condition accordingly.