Malicious PDF — malware analysis report

Static analysis result for SHA-256 cab9bc89d080ea80…

MALICIOUS

PDF

35.5 KB Created: 2021-05-21 20:43:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 856d1a94e250d16b5669a63150bf68de SHA-1: e14730923348f53b2e7ee98215cb23e3b1dbce30 SHA-256: cab9bc89d080ea80cc61c4b648946b557f5c923d4cfeaf116f38d8988324c874
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one identified as a malicious redirector. The document body text and heuristics indicate a lure for a "game hack" or "free generator", suggesting a phishing or scam attempt. The presence of embedded URLs and the nature of the lure point towards a social engineering attack designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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 https://netcdn.xyz/app/406889139/coin-master-daily-free-spin-app-game-hack In PDF document text
    • http://neltalen.nl/images/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/roblox-promo-codes-generator-no-human-verification_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
stream_002_off00003144.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3144 24832 bytes
SHA-256: 97f8af7b0a69057a79ffa0c0a2d3f766ad255a79295a399f26f2fa39837fe9ad
font_01_sfnt_off0000694d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x694D 18308 bytes
SHA-256: f9a3a46f76b0cae8a4d9bd0baf07f2a5aefd3f4554b846be65e0119e8f17791d

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