Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeeb541df84f5107…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 22:26:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 88a6e31e6ac291c505e20d201dbf27b3 SHA-1: dcb8d43fdfd4e9382700c1697da3826b8378d4c3 SHA-256: aeeb541df84f5107fb8062665c3ec4b5ecf8098e57564247901cd0d71cdf6384
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/479516143/best-free-minecraft-hacked-client-game-hack PDF link annotation
    • http://biblioteca.ganexa.edu.pa/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/how-to-get-free-items-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/how-to-hack-on-roblox-tea-cup-hack_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/www-blox-us-free-robux_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/free-robux-com-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_off00003127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3127 22420 bytes
SHA-256: 0942e2a7db5b9e6a1b30f2356f0e91f5e2b4b56b85b86facd298c85acd188c81
font_01_sfnt_off00006325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6325 18492 bytes
SHA-256: de6dea86fd6d9d2ae37ee86cd92174b2735422e57a595b8bae0417e8dfd3f9d4

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