Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b305de362b48ed7…

MALICIOUS

PDF

47.1 KB Created: 2021-05-14 02:36:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1260ea77b10973a1347ae33748c3c3a1 SHA-1: 342c6b14c7e7de5009a8394366f027cc772abf6f SHA-256: 2b305de362b48ed7b4ccf4aa4cef4ff9a6bdabaf01115a57e62ac21f0ea4cf07
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are presented as 'free generators' or 'hacks' for popular games, indicating a social engineering lure. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly suggests this malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score point towards a malicious PDF designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/406889139/juego-hackeado-de-coin-master-game-hack PDF link annotation
    • http://chocolats-boccardi-carcassonne.com/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/rbx-com_GM431946152.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/oginject-co_GM406889139.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/robux-best_GM431946152.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/robux-earner_GM431946152.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/roblox-games-with-free-boombox_GM431946152.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/code-free-robux_GM431946152.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://chocolats-boccardi-carcassonne.com/images/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ab8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB8 27552 bytes
SHA-256: 1277d43646b8b6504080461ea7875d2a7bbdc0604ac0026598770db319085e09
font_01_sfnt_off00008a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A53 2920 bytes
SHA-256: 601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7
font_02_sfnt_off0000946c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x946C 18652 bytes
SHA-256: e8c9da89df0fd7ae09b27778bbdced4cbf3d472d54c646d402828623a8476954

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