Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee8beefa3b30a31…

MALICIOUS

PDF

26.3 KB Created: 2021-07-02 00:30:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2567f9424e999212690f95b37232d124 SHA-1: c8a365c4293c3777a41d49760dae02fed6091789 SHA-256: 7ee8beefa3b30a314827884729ea2460ad4745149f2baf3814c988491fbf8183
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to a malicious website promising free game hacks and Robux gift card codes. The document body explicitly mentions 'Robux Gift Card Codes For Free' and 'CLICK HERE TO ACCESS ROBUX GENERATOR', indicating a social engineering lure. The presence of embedded URLs and the nature of the lure strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier clean score 0.0372

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.co/app/431946152/robux-gift-card-codes-for-free-game-hack In 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_off00001581.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1581 20976 bytes
SHA-256: 5a421671d5f79d3fb0ed403a1cc7f602d0cfaea84ee081fca48109578d6faa7f
font_01_sfnt_off000042be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42BE 19112 bytes
SHA-256: 0ac785f13b6ebea5ac10e3f3a7e01f20ad1ba7ea72f4eb2def22e8c0be4e311f

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