PDF -> Mobi: Images loose position

Hi everybody,

I would like to convert some PDFs into Mobi. Thereby, I noticed that the images I have within the PDF are all at the beginning of the mobi file and not at the appropriate place within the text of the first page. To be clear, I have the following structure on the first page of a pdf:

Text
Picture
Text
Picture

And the resulting mobi structure at the moment is:
Picture
Picture
Text
Text

Best
Andy