Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d4add428f53d582…

MALICIOUS

PDF

43.9 KB Created: 2021-06-13 23:06:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 42fc6bdb83d010f55e8f96452c82c7d0 SHA-1: 100e7416ed5db7721eb4aad3bd2b3d942c8fb8df SHA-256: 0d4add428f53d5823d64467da6a02b036631104b2ca903cdffa197a1fe0dd599
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are disguised as game hacks or generators for popular games like Roblox and Coin Master. The primary URL, http://netcdn.co/app/431946152/how-to-hack-and-become-higher-rank-roblox-d-day-game-hack, strongly suggests a social engineering lure to entice users to click through to potentially malicious content. No scripts were extracted, but the high number of embedded URLs and the nature of the lures indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.co/app/431946152/how-to-hack-and-become-higher-rank-roblox-d-day-game-hack PDF link annotation
    • http://akbidprimahusada.ac.id/elibrary//repository/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/free-robux-place-2021_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/likes-for-tiktok-free_GM835599320.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/how-to-hack-roblox-robux-no-download-windows-10_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/earn-robux-websites_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/fb-coin-master_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/hack-coin-master-apk-358_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_off00004ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE2 25496 bytes
SHA-256: 074c25d6efb6fe3429189c5daa43da27ce5f6baed067380cbb808accbf469026
font_01_sfnt_off000084f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F1 19704 bytes
SHA-256: 1b4e3fb5708fb67aa1d799c96f694a810e8276c0d383a9ca47934a073fe7c72c

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