Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dc369596703fc90…

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 01:34:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3dcf084db3f058ef86b03ccfc3ce2471 SHA-1: c21c3e7f8d87f30cf26b9b7ca0cfa73d1f15ecd3 SHA-256: 9dc369596703fc90862468ed36ae89418fe71c813c82231d5d1139f6a9b343e5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a game hack lure, directing users to a suspicious URL. The document body and embedded URLs reinforce this lure, suggesting an attempt to trick users into visiting a potentially malicious site. While no scripts were extracted, the overall pattern indicates a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-spins-glitch-game-hack PDF link annotation
    • http://library.umuslim.ac.id//repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/offers-for-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-robux-hack-no-survey_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-with-fake-account_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-roblox-promo-codescom_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-points-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/city-architect-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-build-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-account-taker_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-hack-toturail_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/roblox-rape_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-stacked-roblox-arsenal-account_GM431946152.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
font_00_sfnt_off00002f32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F32 22460 bytes
SHA-256: 32a585e2e719ca851ef1dfed63040863d538527e2c617b1a79c64dd7eadd006a
font_01_sfnt_off000060ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EE 18416 bytes
SHA-256: 33e7a5adb4aaed326f7acf078be2bcc86209aa83c358f655c81d2ecbcac8adfe

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