Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d000b97f60be99b…

MALICIOUS

PDF

35.4 KB Created: 2021-06-19 18:08:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: eab72bcc739ece91c63144378bb4e428 SHA-1: 34a74d1896e97a2dd567925219fb634671769deb SHA-256: 4d000b97f60be99bdb674b2a6a37aa3f3f3e4ca87955283d743a4cc8bac1a3e8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free Robux' or game hacks to entice users. It contains multiple embedded URLs, with the primary one being http://netcdn.co/app/431946152/free-robux-gamecard-game-hack, which likely leads to a malicious download or scam page. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to potentially harmful content.

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-gamecard-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/roblox-maid-paintball-2-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-350-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-generator-no-download-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-fun-hack-online_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robloxhacks_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-400-spin-link-today_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_off00003147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3147 23284 bytes
SHA-256: 0cf3098e28b1d35e894c778658c6884d54754df6b65a61958e6ae3e9409d833d
font_01_sfnt_off0000654e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654E 19152 bytes
SHA-256: 32794b45e1bfb3d19f39a5aeda7b1272120ae2fb2d8299c3888e33a23e37ad66

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