Malicious PDF — malware analysis report

Static analysis result for SHA-256 220b6d302b75ebc0…

MALICIOUS

PDF

44.5 KB Created: 2021-06-04 02:18:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b779b5f72f924c0b1e1a3ec199a6be75 SHA-1: ab93c022c8e85311ed219414fe5a0029ad3e6eda SHA-256: 220b6d302b75ebc074e1c12227f80a763d8180ac10d92c13a756007eadeecf03
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a 'game hack generator' which is a common lure for malicious downloads. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the embedded URI and the 'PDF_GAME_HACK_REDIRECT_LURE' heuristic strongly suggest the intent is to redirect the user to a site that will likely host malware or initiate a further phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.online/app/406889139/mcpe-master-hack-unlimited-coins-latest-version-game-hack PDF link annotation
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/fast-robux-online_GM431946152.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005051.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5051 25248 bytes
SHA-256: 5ca6129cc66f733d4e4d9aeb8ff451ff743e98063c7acce4dcd9b89e3621b210
font_01_sfnt_off00008a22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A22 18720 bytes
SHA-256: 9a564b0c0a644540a66c1b1ff06b652386e2dfb1d0e582b0e17ab2c442631031

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