Malicious PDF — malware analysis report

Static analysis result for SHA-256 09f6b1007531bd59…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 19:38:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0fb90402440e2f3cbb4964b7d278ea67 SHA-1: 8519c1b08c5a9642164214dfc379e87190684341 SHA-256: 09f6b1007531bd59eb283f65b94aebf1d61e3b3523779a56c2740e4576dbf553
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/hacks-to-get-free-robux-on-roblox-in-2021-game-hack PDF link annotation
    • http://akbidprimahusada.ac.id/elibrary//repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/robux-hack-2021-website_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-vip-roblox_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-hack-tool-download-fee_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-unlimited-spin-apk-free-download_GM406889139.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/hack-para-roman-aegyptus-roblox_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/roblox-meep-city-free-games_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/all-the-roblox-hacker-ids_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-banned-for-hacking_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-hack-mod-apk-unlimited-spin-download_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_off00003438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3438 21792 bytes
SHA-256: 91d0e151baad0efd5ebee2f91ca26dea4aef5f967cb7bced42cf2b6ddfa01917
font_01_sfnt_off00006410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6410 19280 bytes
SHA-256: 0866427d6bba30f80405740331819f157925e2959424df5aabf350f103f991d2

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