Malicious PDF — malware analysis report

Static analysis result for SHA-256 6111a7a01df7fdc4…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 21:47:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f7b867626e571671c9707f585cd67e08 SHA-1: 1f3a4b76a4a880e3155dcc7bb23bb6fd1dcad7a9 SHA-256: 6111a7a01df7fdc434c0839ff31064ef21a9964fb8b5e2ce212804100b1800a7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a high-severity heuristic firing for a 'GAME_HACK_REDIRECT_LURE', indicating it links to a site promising free game hacks. The ML classifier also flagged the PDF as malicious with high confidence. The primary IOC is the external URI pointing to a suspicious domain, likely serving as a landing page for a phishing or malware distribution scheme.

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/431946152/robuxmatch-com-free-robux-game-hack PDF link annotation
    • http://lib.icbc-indonesia.org//repository/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/cheat-code-roblox-vehicle-simulator_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/ban-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/get-free-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-snowman-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/pubg-uc-icon_GM1330123889.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-robux-with-out-human-ver_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-cheat-engine-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-avatar-animations-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-free-hacks-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/tiktok-for-free-textbooks_GM835599320.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_off00002e36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E36 22152 bytes
SHA-256: f843f8c1b7a0978ce512d59bc4c2bad00b2f1f3c9d66479ca61752efb55a77bd
font_01_sfnt_off00005f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F40 19244 bytes
SHA-256: 4ad327823a1ecd3abfe961c49d13734587955ac9e5f3e77b093970b56673cf6a

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