Scaling native doc can lead you into unexpected effect.
If your goal is to have only PDF bigger than INDD and if we are talking about 7% ratio - I suggest to export INDD to PDF as it is and resize PDFs in next step. It could be done by script.
Thanks for the reply
When you say it can be done by script, do you mean through Indesign scripting
Or, first export through InDesign, and then use Acrobat scripting?
Both ways possible.
Through InDesign ==> export ==> create a new, bigger doc ==> place PDFs and scale them ==> export