Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a3af646a9b0111f…

MALICIOUS

PDF

33.6 KB Created: 2021-07-04 10:33:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 40068c3e158a4c380ca24c4b110b71d3 SHA-1: 747e1fff45fb64b51d5b1802a9b38269ebdf8f7b SHA-256: 3a3af646a9b0111f2ed5dc28c149881df9703b334829bc578f0fa9d5267c08cc
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.tw/app/431946152/get-free-robux-game-hack PDF link annotation
    • http://library.yamasi.ac.id/repository/ben-10-cosmic-destruction-cheats-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-gamepasses-all-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/admin-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-roblox-robux-generator-2021-without-human-verify_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-how-to-hack-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-become-antman-for-free-roblox-sharkblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/robux-hacks-for-pc_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-accessory-bear-face-mask-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hack-para-jailbreak-roblox-2021-money_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_off00002e34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E34 21976 bytes
SHA-256: 8d23a693d71264f353b6255e09443bd1f119b2f4e8da98b119fdcb37921f0f82
font_01_sfnt_off00005ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECF 18820 bytes
SHA-256: 04d56578d6fa3a791f42370f0ef4c3dea66af1fdc194d67c4390c65d423efb6d

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