A PDF Attachment Extractor -- BC I don't want to install Adobe...

pdf-extract-attachments

#!/usr/bin/env python
# Copy into /usr/local/bin or as appropriate for your $PATH

import argparse
from pypdf import PdfReader
from pypdf.errors import PdfReadError

parser = argparse.ArgumentParser()

parser.add_argument("pdf", help="The PDF to extract attachments from.", type=str)
args = parser.parse_args()

try:
    PdfReader(args.pdf)
except PdfReadError:
    print("invalid PDF file")
else:
    pass

reader = PdfReader(args.pdf)

for name, content_list in reader.attachments.items():
    for i, content in enumerate(content_list):
        with open(f"{name}", "wb") as fp:
            fp.write(content)
        print("Extracted: " + name)

Run like extract-pdf-attachments <source pdf>.