Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bc65be53e1aa9a6…

MALICIOUS

PDF

34.3 KB Created: 2021-07-02 01:19:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ab855ecd65c2d1b3aa946c79e8b3510f SHA-1: 55c2b9a51ddc537d03d7049ed96189d3e93e6227 SHA-256: 2bc65be53e1aa9a6b9211d565d7f69d4b4311fd0bb941c52e21c509179b0a1b7
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains numerous links to external websites, many of which are SEO-optimized PDFs promising game hacks and free currency for popular games like Roblox and Coin Master. The ML classifier strongly indicates maliciousness, and the presence of a download button lure suggests an attempt to trick users into downloading a payload. The document body itself contains a primary URL that likely leads to a malicious download or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/nonsense-diamond-roblox-hacks-fangs-game-hack
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spin-realme-products_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/roblox-free-draw-alpha-2_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/free-roblox-suit-shirt-templates_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/get-free-spins-in-coin-master_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/roblox-ro-boxing-hack_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-2021-december_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/funbloxxyz-free-robux_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/roblox-cheat-engine-lua-gui-scripts_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/coin-master-for-pc-free-download_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/robux-generator-no-human-verification_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/tiktok-free-beer-for-a-year_GM835599320.pdf
    • http://lib.fekon.untad.ac.id/repository/roblox-april-fools-hack-2021_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/free-coin-master-coins-and-spins_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-hack-2021-no-scam_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/roblox-cheat-remove-hair_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/free-roblox-accounts-with-passwords-2021_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/roblox-gewicht-heben-simulator-3-hack_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-legit-august-20_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e8f.bin
60eb38f86645fa317ef3c9408be1f36e31c59757525bb8bd81158535579174a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E8F 22104 bytes
font_01_sfnt_off00005f80.bin
d7863b581a3a1a261320f719e1a105df7938e81bf764f3fa809e92edfc488e55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F80 19540 bytes

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