Honestly there are so many ways pdfs can hold unique information that retaining the same format is probably not going to work.
The 2 options I suggest are . . .
Use a tool to extra the text into a plain text fromat then paste it into word along with screen shots of any images you need.
You could try converting each page to a JPG image using something like Gimp. You could then desaturate it or convert it to pure black and white so it reveals any hidden text which you can paint over. If you want the images in colour just crop them out from the original file and paste into the new b&w copy. This is a crap description but hopefully it makes the point.
Honestly there are so many ways pdfs can hold unique information that retaining the same format is probably not going to work.
The 2 options I suggest are . . .