Malicious PDF — malware analysis report

Static analysis result for SHA-256 8690aef076a22cce…

MALICIOUS

PDF

32.8 KB Created: 2021-07-19 11:41:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c3d671e466af8a6b691e12901a7694d6 SHA-1: 92a5f9e6c9371a0a1e6dec004de6f510c1dc4dbf SHA-256: 8690aef076a22cce8354fd55a490f3d8924041e8d83c556350e28c82a0892de9
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 0.9900

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/can-you-make-a-minecraft-server-for-free-game-hack PDF link annotation
    • http://hakuna.co.za/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://hakuna.co.za/images/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://hakuna.co.za/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://hakuna.co.za/images/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://hakuna.co.za/images/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://hakuna.co.za/images/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://hakuna.co.za/images/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://hakuna.co.za/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://hakuna.co.za/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://hakuna.co.za/images/get-free-followers-on-tiktok_GM835599320.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_off00002dda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DDA 21912 bytes
SHA-256: 648123cbbf20158d7baf8fa5b6c58816cef2a831b650a75e8637a69cf6675e56
font_01_sfnt_off00005e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E15 18296 bytes
SHA-256: 7b2a5025a6b2eafbb08597cb19c0e2dd24287b9ce61b32a45f1f6eb7f3859dea

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