Malicious PDF — malware analysis report

Static analysis result for SHA-256 afd2187f733ad7d6…

MALICIOUS

PDF

34.8 KB Created: 2021-07-01 02:17:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8c32e5bece5d7f40aa28f85681162f65 SHA-1: 8cbb8991737dfe4ab5ffa0078f819e1af67ddc1f SHA-256: afd2187f733ad7d6ff1a5a92c9caeaa1dfdebe63e28bd5a0f7cc91e7737f2dcb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/how-to-get-free-robux-very-easy-and-fast-game-hack PDF link annotation
    • http://autoskola-scp.com/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/is-tiktok-free-on-app-store_GM835599320.pdfIn PDF document text
    • http://autoskola-scp.com/files/spin-link_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/www-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-unlimited-robux-hack-no-download_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/block-best-robux_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/best-free-robwhat-does-roblox-points-do-ox-clothes_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-free-micky-mouse-clothes_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-hack-steal-roblox-account_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-roblox-groups_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_off00002f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8C 22380 bytes
SHA-256: c1e2999f2e37197917e8132990753b1ba79b9991428dbb7ab431fa8538c3f3a5
font_01_sfnt_off00006152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6152 19472 bytes
SHA-256: f7daff48947b188c41f8e20d5c1c2340b45df9bfd4f29b32c84f33a3f9a86704

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