Malicious PDF — malware analysis report

Static analysis result for SHA-256 f707df937d99d83b…

MALICIOUS

PDF

45.3 KB Created: 2021-05-15 05:31:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7b476cc920798c55d9cf5bbe33d3bfba SHA-1: 972f4d0775dcf5e41f69f08d6ba585b1a79665c4 SHA-256: f707df937d99d83b334bb32d85e6be60ec919062076999c2aadff1085ee7c75d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a lure for free Robux and includes an external URI pointing to a suspicious domain. The presence of MFA lure heuristics suggests an attempt to harvest credentials or session tokens. While no scripts were directly extracted, the PDF structure and embedded URLs indicate a malicious workflow, likely involving redirection to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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/free-robux-without-any-verification-game-hack
    • http://enosiderma.gr/images/coin-master-hacks_GM406889139.pdf
    • http://enosiderma.gr/images/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdf
    • http://enosiderma.gr/images/actual-free-robux_GM431946152.pdf
    • http://enosiderma.gr/images/coin-master-hack-cheat-engine_GM406889139.pdf
    • http://enosiderma.gr/images/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • http://enosiderma.gr/images/how-do-i-get-robux-on-roblox_GM431946152.pdf
    • http://enosiderma.gr/images/roblox-generator-no-human-verification_GM431946152.pdf
    • http://enosiderma.gr/images/coin-master-free-spins_GM406889139.pdf
    • http://enosiderma.gr/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
    • http://enosiderma.gr/images/free-card-link-coin-master_GM406889139.pdf
    • http://enosiderma.gr/images/free-coins-and-spins-coin-master_GM406889139.pdf
    • http://enosiderma.gr/images/free-coin-master-spins-daily_GM406889139.pdf
    • http://enosiderma.gr/images/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdf
    • http://enosiderma.gr/images/hackear-juego-coin-master_GM406889139.pdf
    • http://enosiderma.gr/images/how-to-get-free-roebucks_GM431946152.pdf
    • http://enosiderma.gr/images/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • http://enosiderma.gr/images/how-to-get-free-robux-2021-easy_GM431946152.pdf
    • http://enosiderma.gr/images/coin-master-free-coins-and-spins-today_GM406889139.pdf
    • http://enosiderma.gr/images/minecraft-bedrock-download_GM479516143.pdf
    • http://enosiderma.gr/images/minecraft-hacked-client_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d02.bin
f786140b7d02df3bce020708b410f0041d3094e70941853e5a3d1be934021672		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D02 27576 bytes
font_01_sfnt_off00008c29.bin
f37955fcb4845292a10cf385cf7825d095aa25907e4328d2f78dbaed4e94b6f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C29 19144 bytes

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