Malicious PDF — malware analysis report

Static analysis result for SHA-256 b74858c3ddef8ca8…

MALICIOUS

PDF

34.6 KB Created: 2021-06-25 10:06:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d7c24c5bdf8e8774ca4c79f67dfdc807 SHA-1: 466bfeade0534b61278b5c20ed96e081c268caa7 SHA-256: b74858c3ddef8ca8470411aeb4ad501dd9b900ff30b0534f6eeb07e8d4407fb5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for linking to a 'free generator / game hack' redirector, specifically pointing to 'http://netcdn.co/app/431946152/free-roblox-cookies-game-hack'. The document body also contains this URL and text related to game hacks, reinforcing the lure. While no scripts were extracted, the PDF's structure and embedded URI strongly suggest a phishing or social engineering attack aimed at redirecting users to a potentially malicious site.

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-roblox-cookies-game-hack PDF link annotation
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/unblocked-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/tiktok-free-package-dialog_GM835599320.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/roblox-how-to-get-shirts-for-free_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/roblox-hack-tix-and-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/how-to-hack-roblox-to-have-robux_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/roblox-pet-ranch-cheats_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/web-roblox-com-free-robux_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_off00003118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3118 22232 bytes
SHA-256: 9d9fe56b617aa6a18d104033b854d47bee94d99589cc2536a92ed366fa7376d1
font_01_sfnt_off00006295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6295 18940 bytes
SHA-256: 828a9c6b1016e20605b8e8090a5881fc8faee9f7000e14506e3e9b46c9681152

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