Malicious PDF — malware analysis report

Static analysis result for SHA-256 9200f4d167bb5e2d…

MALICIOUS

PDF

45.2 KB Created: 2021-06-08 14:39:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0ca76cd5fd79dc279df8d1944ad1f25a SHA-1: 69f703d575f13a48005b70b19ea843dc32decd5b SHA-256: 9200f4d167bb5e2d102989d7e646812ea1b915f652d3098d08009343cf911bd2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a high-confidence heuristic identifying a lure for game hacks. The document body, though heavily obfuscated, contains references to game-related terms and URLs. The presence of these links suggests an attempt to redirect the user to malicious websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/roblox-free-chaser-codes-game-hack PDF link annotation
    • http://lib.vipklh.ru/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-roblox-how-to-get_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-hack-fast_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/minecraft-hack-client-download_GM479516143.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_off00004ff5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FF5 26312 bytes
SHA-256: 06d86335ca3b92caa60f11feca9705a2bc005b2f1369055ac77210f75a9163ae
font_01_sfnt_off00008d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D94 18516 bytes
SHA-256: 80268436270d495f6e0bb17fc323a1b6cccec920ea032291fcee73196f316c65

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