Malicious PDF — malware analysis report

Static analysis result for SHA-256 96c4988fcb845770…

MALICIOUS

PDF

34.9 KB Created: 2021-06-25 12:33:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c8bfbb2f437409efe74eb5e2c3eb896d SHA-1: 17a5f35654f7c97fade1dae747d6c6b3bdcda1f5 SHA-256: 96c4988fcb8457700e5c4ba0745d076d2ddba84ff644803ed1a8a606efdde900
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.co/app/431946152/free-robux-hack-cheat-engine-game-hack PDF link annotation
    • http://lib.teknik.unimal.ac.id/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/hack-roblox-lumber-tycoon-2-fly_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/www-rbx-com_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/hack-roblox-jailbreak-auto-arest_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/como-tener-robux-gratis-facil-y-rapido-sin-hack_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-admin-gamepasses_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-lvl-7-script-executor-free_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-mods-hack_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-hack-apk-33-download_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
font_00_sfnt_off0000313e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x313E 22300 bytes
SHA-256: 2e762e0da27a777cb879293b824128b6519bed831693606f63c682f3cde7b140
font_01_sfnt_off000062af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AF 19276 bytes
SHA-256: 59b976081d73dd53c5bb4c04c720e78a40014e8b725cacb1223fe292bfbdeccd

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