Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe6b38a7c0e80064…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 11:10:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2f558d475263028fad70b35b9b2ca03e SHA-1: e69cc2979c469fdc008fcfedf407e15aa5a9cd00 SHA-256: fe6b38a7c0e800646b89502228032b7ad1a0b9a7d8a4947742e7f31f01a6b9fd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to 'netcdn.tw', which is flagged as a lure for game hacks and free generators. The document body and heuristics indicate a redirection to external URLs, likely to host malicious content or phishing pages. No scripts were extracted, but the presence of embedded URLs and the 'game hack' lure strongly suggest a phishing or malware distribution attempt.

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.tw/app/406889139/coin-master-free-gold-cards-link-2021ee-spins-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/coin-master-today_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-inspect-no-waiting_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-lumber-tycoon-cheat-money_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-mad-city-roblox-descargar_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/game-toolbox_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-players-accounts-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-headless-head-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-do-i-get-my-hacked-robux-back_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robuxfree-con_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_off00002fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC9 22920 bytes
SHA-256: 1bbc952af30e3ef84b4c0bb2d6044fe5e479810c4096489e4b258242d242e276
font_01_sfnt_off00006346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6346 18996 bytes
SHA-256: 22f2bf8559a6fa9437861d4df9ca8617d9e73d2b9dd01e42a3948ec0e9ac9f53

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