Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3323ed2a9976b39…

MALICIOUS

PDF

46.6 KB Created: 2021-06-04 05:35:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 37e0456c34e9d9f01b97cf5d9b01f86e SHA-1: e9686b7e33d1fa505f3f52cd0c43728becff77cd SHA-256: b3323ed2a9976b39725f63e91b278d8b5b4d9918af4c905ef0111bcc1f1a3b57
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a DOC BODY that explicitly mentions 'Roblox Free Robux Cheat 2021' and includes a URL pointing to a potential download. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users searching for game cheats. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.online/app/431946152/roblox-free-robux-cheat-2021-game-hack
    • http://digilib-ppsunisma.ac.id/repository/wahoogaming-co-free-robux_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/www-bandicam-com-free-robux_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/free-roblox-hair-codes_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/coin-master-hack-ios-download_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdf
    • http://digilib-ppsunisma.ac.id/repository/roblox-free-play-no-download_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/get-free-robux-generator_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/roblox-hacks-2021_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/coin-master-unlimited-spin-link_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/how-to-o-get-free-coin-master-spins_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/free-spins-coin-master-links_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/roblox-synapse-hack_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/como-hackear-coin-master-ios_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/lazyblocks-com-robux_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/best-free-roblox-executor_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/free-roblox-girl-hair-not-a-model_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/free-online-generator-for-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ffd.bin
197929a2132934e39db41505344cac3ad2d107d5fb43ed3b4a805865e16c1cb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FFD 28492 bytes
font_01_sfnt_off0000917b.bin
09653788e275d760ce293ce2bb39e2a02fe6f9a2a862e2d18c298f56ae42223d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x917B 18988 bytes

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