PDF static analysis report

Static analysis result for SHA-256 3af3cc960ab8f164…

SUSPICIOUS

PDF

29.7 KB Created: 2021-07-20 15:11:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0283e13be21d290bf190b590dec01f97 SHA-1: e30c1f93de6757230652220e8a0bd954d934ad34 SHA-256: 3af3cc960ab8f164cf8ddae9f6a665d28a62a2548c792a46de4e197cab83f459
52 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and text referencing 'free Robux' and a 'Robux generator', indicating a common lure for scams or malware. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms this, pointing to the URL http://netcdn.tw/app/431946152/how-do-u-get-free-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.0794

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/how-do-u-get-free-robux-game-hack PDF link annotation
    • http://airrix.com/wp-content/uploads/fsqm-files/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2049 22068 bytes
SHA-256: 8f728ae0b3a19574cfcb57239a446688ea00fe6b801a24bf310e1eda5f3d823d
font_01_sfnt_off0000514a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x514A 18636 bytes
SHA-256: ab6f51fdb1eed883fd21dff3bd0336e3a1b816e6c21a8924207bfe84ed9a007e

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