PDFDetach

Include it in your Gemfile, make sure to set the version to the Ubuntu release you'll be using it on.

# For Ubuntu 20.04
gem 'pdfdetach', '0.20.3'

List files attached to a PDF

pdfdetach = PDFDetach.new('path/to/pdf_with_attachments.pdf')
files = pdfdetach.list

Save all attached files

pdfdetach = PDFDetach.new('path/to/pdf_with_attachments.pdf')
pdfdetach.saveall(output: 'path/to/output')

You can override the bundled binary with a the binary installed in your system via an initializer

if ENV.fetch('PDFDETACH_PATH', '').present?
  PDFDetach.configure do |config|
    config.binary_path = ENV.fetch('PDFDETACH_PATH')
  end
end

Just make sure the environment variable PDFDETACH_PATH is the full path to your local binary. If you're using dotenv you could so something like this:

PDFDETACH_PATH=$(which pdfdetach)

If you need to target some other environment, please refer to the build instructions

This gem is available as open source under the terms of the GNU General Public License

Poppler is licensed under the GNU General Public License v2