Malicious PDF — malware analysis report

Static analysis result for SHA-256 6912b94ca0efa2a4…

MALICIOUS

PDF

32.2 KB Created: 2021-06-30 08:16:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 942424ef064ec457a0b19eb039bc0376 SHA-1: 810a910b1e0b04a15379cda7bee84f502e65c64f SHA-256: 6912b94ca0efa2a49c0077d9cd494e8cd1959b9a44d0fb8cd9f9b8e144aa8be2
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/479516143/minecraft-pe-free-ios-game-hack PDF link annotation
    • http://lib.vipklh.ru/repository/coin-master-app-hack_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-offers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-roblox-account-gettet_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-sprinting-simulator-2-hack_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/slurp-ink-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/master-coin-free_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-admin-roblox-gamew_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/hacking-roblox-robux-codes_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/hack-coin-master-2021_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_off00002c95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C95 21512 bytes
SHA-256: 5236f03d286e8eb6875d03db2ffc38d85f0d460226ca95fcdac67e98cfd3a431
font_01_sfnt_off00005b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7F 18152 bytes
SHA-256: 9217169def43f8c16a67344ac79484d347e21e3639697df2a6f77d3a213ff034

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