Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5cd0789a8e21f8f…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 22:25:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0c853bd70564d95733147b9e0b3f5c68 SHA-1: dda93c134dbe22a0b0c1773fd06a1e08351a9227 SHA-256: e5cd0789a8e21f8f0543f5148d4931a9150d3d81f89afe3e4e2a4f6c37742985
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game cheats, specifically mentioning Roblox, and includes a link to a suspicious URL. This URL, http://netcdn.co/app/431946152/roblox-cheats-for-name-that-character-game-hack, is flagged as a redirector for game hacks. The document's content and the heuristic firings strongly suggest a social engineering attack aimed at tricking users into downloading or executing malicious content.

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/roblox-cheats-for-name-that-character-game-hack PDF link annotation
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/how-to-get-the-penguin-suit-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/free-shirt-maker-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/free-roblox-accounts-that-work-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/adscend-media-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/roblox-chat-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/roblox-mm2-coin-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/roblox-jet-free_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/how-to-get-free-roblox-items-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/skidmax-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/how-to-get-robux-for-free-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_off0000311f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x311F 21744 bytes
SHA-256: ee93196345c89c16a21543b6cebfd5a3109d5ed93e03b82b43f960e11fcaedad
font_01_sfnt_off000060f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F8 19180 bytes
SHA-256: b7d09dea3a4edc0bf3b6198b72c39e932fff1d404d8f7210df9daf29b485dad5

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