How find and extract files attached to a page?

[wvqq]

Using embed-pdf-viewer, I find files if attached like this:

pdftk in.pdf attach_files foo.tar.gz output out.pdf

But I can't find files if attached like that:

pdftk in.pdf attach_files foo.tar.gz to_page 1 output out.pdf

Files attached the latter way are attached to a given page. I can see them in Acrobat Reader and extract them. Using pdftk, I can extract all files - doesn't matter whether attached to the whole PDF or to a single page - like this:

pdftk input.pdf unpack_files output outpt_dir/

Is there a way to extract all files this with embed-pdf-viewer, also the ones that had been attached to any page? If not, what does you hinder from implementing this into embed-pdf-viewer?

Here goes an example of a file that I would be able to extract from: https://up.picr.de/51061700mf.pdf

File NoKings_XXX_-_American_Taliban_Blues_(NoKings_XXX).mp3 is attached at page one, but embed-pdf-viewer ignores the attached file.

BTW, don't worry that I used picr.de to upload an MP3 file although it's no picture. I asked and I'm allowed to do so.

[wvqq]

Meanwhile I'm convinced it's not the question how to do it; it's rather an issue. Hence, I've raised issue #689 to cover this.