I am looking for Wordpress, Drupal or Joomla plugin similar to this one, with product list and PDF attachments.
Does anyone know if there is such a plugin?
For Drupal you need the cck module and imagecache if you are using Drupal 6. No module needed if you use Drupal 7 (don't know if imagecache is in a standard Drupal 7 build).
You can just make a content type "product", add the fields you want, scale the imagefield with imagecache and you can create the look by making a template tpl.php for that content type, or use views.
You do not need any plugins for Wordpress to achieve that. Just look up customized Wordpress loop or you can try post thumbnail plugin (there are many, here's an example)
