Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c380749902e4539…

MALICIOUS

PDF

33.7 KB Created: 2021-07-04 11:01:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 94146b5f0253603dc62770ee01d7bcd3 SHA-1: a191f58a5999ef874c060b546f02e0fc2ab0bb19 SHA-256: 7c380749902e45394cac52c2f953416102cddcbdb43226a41b924a89baa092c9
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/free-robux-com-2021-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-gift-card-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/shoulderless-shirt-in-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-no-subscribing_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/youtube-roblox-dax-she-cheated-roblox-code_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/2021-coin-master-hack_GM406889139.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_off00002d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D66 21776 bytes
SHA-256: 16feace41c56b8d03e19ee2e964f338085c9dcf3b2d0aa3791969333d4ceb0aa
font_01_sfnt_off00005d90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D90 19380 bytes
SHA-256: e4a3050f3e501d111e2505792e6fe17b213487e8f387ded0c09bd9d126917491

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