PDF Plain Text Extractor
is another tool that can extract plain text from PDF files without any PDF SDK or other third party lib's help.
You don't need any products from Adobe (neither Adobe Acrobat Reader nor Adobe Acrobat) installed on your computer. P2T focus on text extraction from pdf file. It analyzes the raw pdf file directly and extract plain text from it. The layout of the document is reserved.
Haven't tested it yet, trial is available though; full costs $59.95