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Sahyog Bank published a routine maintenance circular as a PDF. The visible text is boring on purpose. But PDF files, like images, carry hidden metadata: author, subject, and keywords that most readers never check.
You are given notice.pdf. The flag was split into three pieces, and each piece was encoded and stored in one metadata field: Author, Subject, and Keywords. Your job: read the metadata, take the three values in that order, join them into one string, base64-decode it, and the flag appears.
You can use exiftool, or pdfinfo on Linux, or a short Python script with the pypdf library. Metadata is a classic hiding spot in real investigations, because almost nobody looks there.
This challenge only. All names, addresses and data are fictional. Do not test any real system.
Stuck? Open hints in order: a nudge, then the next step, then an explicit pointer. Costs are taken from this solve's points.
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Files are safe practice artefacts made for this challenge. Open them on your own computer.