Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e21e6586272f014…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 19:46:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: db386c620f47f3f97a6112140a93c396 SHA-1: 89db8f2b687e2654079155e0c8e2c73b1bca7846 SHA-256: 8e21e6586272f01468d0508cf9b8f63b08808c1c78d171bfc18a92b3c321b23b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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-real-working-2021-100-game-hack PDF link annotation
    • http://digilib-ppsunisma.ac.id/repository/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-apoc-kill-hack_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/hack-roblox-como-tener-robux-gratis-2021-octubre_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/whats-a-code-for-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-robux-on-ipad-pro_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-app-hack_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-bc-for-roblox-codes_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-vip-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-games-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-800-robux-free_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-hacks-free-pc_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-spins-link-2021-march_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/como-hackear-cuentas-en-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-event_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/extension-bigefpfhnfcobdlfbedofhhaibnlghod-mega-securehtml-roblox-hack_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_off00002d45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D45 22136 bytes
SHA-256: 0f8038f2be42e86de026fcaeba520f52d6bcca241bfc34a9eeb7b08bc799634a
font_01_sfnt_off00005dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFE 19496 bytes
SHA-256: adb373cbc6a5232deebab6164cb570b7a8a58fac52700a784d769bfbb46ee70d

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