Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe937a66e2fc9e38…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 12:13:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: cbd1ce6c5341c2f438a53ff254b50d71 SHA-1: ddb36ae7b92f3860afaa7f15a405e5544bc57c12 SHA-256: fe937a66e2fc9e3845344d7e12534dc18dde2b1030ec64dac45aadb531c0cdf5
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-no-anti-bot-verification-game-hack PDF link annotation
    • http://library.atim.ac.id/repository/bux-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hacks-for-roblox-ro-boxing_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-how-to-hack-kohls-admin-house_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/tears-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/increible-hack-de-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-try-roblox-accessoryes-for-free_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-god-hack-with-lua_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/cmo-puedo-hackear-roblox-en-computadora_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/dinero-infinito-en-bloxburg-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/can-u-hack-roblox-and-get-banned_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/koszulki-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/como-hackear-la-cuenta-de-mellovesbunnys-en-roblox_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_off00002f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F22 23248 bytes
SHA-256: 202ad7eb9cfa9c790648f393b72d3a553d7ed56fadb5fb2f0c03daa4cfefb5a5
font_01_sfnt_off00006375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6375 19072 bytes
SHA-256: 44398671923ff2d7fd58b4a2dab61ea7a8ec8f67097837434ce2698c2fa81bb9

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