Malicious PDF — malware analysis report

Static analysis result for SHA-256 41daa8333975f75b…

MALICIOUS

PDF

43.6 KB Created: 2021-06-04 01:18:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c3ab11ca0c2b1287e6d9eaeec4690cff SHA-1: 35587f7a0a89d105df4ea2588d44950b56111188 SHA-256: 41daa8333975f75be1d6f7701476b2dc1a25930afd7b7851a1906b03eebfe6f8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a game hack lure. The embedded URL and document body text reinforce this, pointing towards a social engineering tactic to redirect users to a potentially malicious site. No scripts were extracted, but the primary attack vector appears to be a deceptive link within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-coin-hack-game-hack PDF link annotation
    • http://lib3tell.stptrisakti.net//repository/free-spins-and-coins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/roblox-points_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/pokemon-go-free-joystick-hack_GM1094591345.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/robux-xyz_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-free-spins-facebook_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_off000050d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50D8 24500 bytes
SHA-256: 2e3c8b47d9e0ec1e69111ba2d8e27710a77a8f100debb625935c184d0a60e4f6
font_01_sfnt_off00008946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8946 17716 bytes
SHA-256: c15a8689411d8cca9ab0759ab4c496fe9b4353d676dd738e300719e9588112ed

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