Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2c61feb73b9b38f…

MALICIOUS

PDF

32.5 KB Created: 2021-07-08 14:18:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 788177a69c8f8cc6a05802bdf79b0a4e SHA-1: 47ad3ac6895182a5b9fab408d04e0af1d796d6fe SHA-256: b2c61feb73b9b38fd21cbf5a81362040eecea2b6aaed3461e9295aee5167e48e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links disguised as game hacks and free currency generators for popular games, indicating a social engineering lure. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and an IP literal URL suggests the document is designed to redirect users to potentially malicious websites. No scripts were extracted, but the document's structure and embedded links point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/835599320/tiktok-free-likes-net-game-hack PDF link annotation
    • http://110.232.83.89/slimsppks/repository/minecraft-hacked-client-download_GM479516143.pdfPDF link annotation
    • http://110.232.83.89/slimsppks/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/easy-way-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/i-got-this-shirt-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/wurst-commands_GM479516143.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/roblox-field-of-battle-gold-hack-2021_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/games-on-roblox-that-give-you-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/how-do-you-get-free-vip-on-roblox_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-not-fake-2021_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_off00002de6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE6 21576 bytes
SHA-256: f703c401fde7ccaf8fb76a559beb00a05cf71d9e93cda752bc2818f435ccc71e
font_01_sfnt_off00005d01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D01 17972 bytes
SHA-256: 758970543c185934da19f301c2263959819be51049adad614cd563d7ac67c1e0

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