Thanks, it is a good idea, and even just coy paste from PDF to word generates the same results.
It can be quite useful in some cases but,
it does not keep the basic text formatting like bold, italics, bullets, numbering and so on and this can be quite a headache (and time consuming) to go over a 100 pages document and apply the formatting separately.
If pdf files are not scanned/dead ones I would go for:
1. Solid Converter: http://cdn.soliddocuments.com/solidconverterpdf.exe
2. Infix PDF Editor: http://www.pdfeditor.biz/infix/InfixSetup.exe
[Edited at 2015-02-15 01:16 GMT]