Extract from PDF using iTextSharp

I am very new to iTextSharp.

I am in need to extract all the contents from a PDF from a given region.

Here I want to extract Text (with all settings like font, size, etc.), photos, graphics, background, QRCode, etc. and recreate another PDF with the extracted content.

Is this possible using iTextSharp?

Can someone help it get started?

I have attached a sample screenshot. The area from which content needs to be extracted is marked in Red color rectangle (at the bottom).

Image may be NSFW.
Clik here to view.

Attached Images

Image may be NSFW.
Clik here to view.