Malicious PDF — malware analysis report

Static analysis result for SHA-256 c00ae1ad8542bf09…

MALICIOUS

PDF

37.8 KB Created: 2021-05-10 13:31:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 66fdc38794c3e02e092671de1784b0a5 SHA-1: bd3522e39c42022be7710905eddaefbd699bc182 SHA-256: c00ae1ad8542bf0943bc9e0b645afd1bd0a8312c1c95ca09abf8e3d779b46365
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for game hacks and free currency, directing users to a malicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to potentially malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9452

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 https://netcdn.xyz/app/431946152/buxblast-com-robux-game-hack PDF link annotation
    • https://servotecnica.com/images/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • https://servotecnica.com/images/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
    • https://servotecnica.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://servotecnica.com/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://servotecnica.com/images/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
    • https://servotecnica.com/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://Buy.HoaxMC.comIn 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
stream_003_off00003629.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3629 26324 bytes
SHA-256: 97d1d93aa7d39f12127523dc49bb9887cf8b13e984f5034d2c5ddcdef3b3f1ef
font_01_sfnt_off0000715d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x715D 18516 bytes
SHA-256: 3775a038529c159d2b25bc1091f697070e8458e38db62e4b1d0942abe88cb01b

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