Malicious PDF — malware analysis report

Static analysis result for SHA-256 117fc38b4a73f93f…

MALICIOUS

PDF

42.6 KB Created: 2021-05-12 05:19:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8f06be1ac62e16809424c2f34f0ab400 SHA-1: da020684ff47e09d7e4aa25104d047ac47aca710 SHA-256: 117fc38b4a73f93f921d2ee99b23824d2c01e11ab4724d11342d7ca67b2677f6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF links, suggesting a link farm designed to attract users searching for game hacks. The presence of a ML_NYX_PDF_MALICIOUS heuristic firing and the sheer volume of external links indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document body and heuristics strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/arsenal-hacks-roblox-game-hack
    • http://neumann.fr/images/coin-master-spin-hack-app_GM406889139.pdf
    • http://neumann.fr/images/how-to-buy-robux-for-free_GM431946152.pdf
    • http://neumann.fr/images/coin-master-attack-madness-hack_GM406889139.pdf
    • http://neumann.fr/images/free-mod-apk-coin-master_GM406889139.pdf
    • http://neumann.fr/images/coin-master-event-hack_GM406889139.pdf
    • http://neumann.fr/images/free-roblox-toy-codes-2021_GM431946152.pdf
    • http://neumann.fr/images/daily-free-spins-for-coin-master_GM406889139.pdf
    • http://neumann.fr/images/roblox-comroblox_GM431946152.pdf
    • http://neumann.fr/images/free-spin-coin-master-link-2021_GM406889139.pdf
    • http://neumann.fr/images/roblox-group-free-robux_GM431946152.pdf
    • http://neumann.fr/images/coin-master-free-spin-daily-bonus_GM406889139.pdf
    • http://neumann.fr/images/free-robux-hack-no-verification_GM431946152.pdf
    • http://neumann.fr/images/get-me-free-robux_GM431946152.pdf
    • http://neumann.fr/images/coin-master-free-spin-realme-products_GM406889139.pdf
    • http://neumann.fr/images/robux-generator-without-human-verification_GM431946152.pdf
    • http://neumann.fr/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdf
    • http://neumann.fr/images/can-you-actually-get-free-robux_GM431946152.pdf
    • http://neumann.fr/images/coin-master-daily-rewards_GM406889139.pdf
    • http://neumann.fr/images/my-roblox-account-was-hacked_GM431946152.pdf
    • http://neumann.fr/images/robux-fun-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049cb.bin
524e9cbf9677f91088e69bb3d864ceb1f03a7ebfc92d4447e7cab781b521673f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49CB 25856 bytes
font_01_sfnt_off00008426.bin
a3c2357e5f06b76da12fb87e71b44d24867f9c5d578f41f931a6caf721fbec94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8426 18184 bytes

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