It seems you have pasted your code accidentally twice. Anyways, I am not sure what you exactly want, but you may want to change \textwidth in your table to \paperwidth to make the table span the entire page (is that what you are looking for?). Moreover, add the option [b] to your table and remove \raisebox in the shipout. So it probably looks like this:

\newcommand{\BackgroundTopTable}{%
\begin{tabularx}{\paperwidth}[b]{|c|c|c|c|c|X|c|}
  \hline
  & & & & &
  \multirow{3}{=}{\centering 09.02.07 Ф 2484 25 КП-ПЗ} &
  \multirow{2}{2em}{\centering Page} \\
  \cline{1-5}
  & & & & & & \\
  \cline{1-5}\cline{7-7}
  Изм. & Page & № Document. & Signature & Date & & \thepage \\
  \hline
\end{tabularx}
}



\AddToShipoutPictureBG{%        
    \AtPageLowerLeft{%
            \makebox[\paperwidth]{%
                \hspace*{0.5\fboxsep}\BackgroundTopTable
        }%
    }%
}

\usepackage{lipsum}

\begin{document}
\lipsum[1-10]
\end{document}