Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca099b63f4d44c1f…

MALICIOUS

PDF

34.1 KB Created: 2021-06-29 20:45:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 61ea4c289388585a1fbf94a3c0f9d49a SHA-1: 451d8e81ad3de31f464223dd667ed57b00f98698 SHA-256: ca099b63f4d44c1fd21faff7def14956e5b8abae78aec1cdf9243a6cbb2790a5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document uses a lure related to game hacks and free currency, as indicated by the document body and high-severity heuristics. It contains multiple embedded URLs, with http://netcdn.co/app/431946152/crystal-hack-roblox-game-hack being a primary redirector. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest it is designed to lead the user to download a malicious payload or exploit a vulnerability.

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/crystal-hack-roblox-game-hack PDF link annotation
    • http://perpusfkip.upstegal.ac.id/repository/hack-robux-no-human-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/cheat-fly-roblox_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-vehicle-simulator-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-cash-script-ultimate-driving-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/what-games-work-with-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-hack-roblox-booga-booga-on-mac-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-hack-no-download-no-survey-no-password_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/get-free-robux-by-doing-nothing_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/hack-de-roblox-robux-gratis-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-tshirt-designs-for-roblox_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_off00002fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB2 21944 bytes
SHA-256: 2ef8c2a604538a67c1e45e7579bfe32981b1d6fa941a1edffaba8d868a4911c6
font_01_sfnt_off0000601e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601E 18940 bytes
SHA-256: 7d76d6d0f87d8bc5c95c2393306a88e40d01f51cf2453c3c5105ff91ff44bf39

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