http://www.mondodalmata.it/admin_gallery/images/gallery/39/img_7096.pdf isn't a valid image

<br /><br />&nbsp;&nbsp;FILE: /web/htdocs/www.mondodalmata.it/home/resize.php
<br />&nbsp;&nbsp;LINE: 30

<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;FILE: /web/htdocs/www.mondodalmata.it/home/libraries/classes/imageTransform.class.php
<br />&nbsp;&nbsp;&nbsp;&nbsp;LINE: 228
<br />