Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3cbfb2bb28a468f…

MALICIOUS

PDF

37.6 KB Created: 2021-05-10 11:52:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 546b149805a8c509134945a139cbf0eb SHA-1: da47f8fa33d7f63c6118483ce051b12ac3bf7c5c SHA-256: e3cbfb2bb28a468f293701b286fd5832d2f6bf9c9f72d5f21d4d71fce0756551
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic indicating it links to a malicious redirector disguised as a game hack generator. The document body and embedded artifacts reinforce this, showing text related to 'Coin Master Free Spins' and a 'CLICK HERE TO ACCESS' button, directly leading to the malicious URL. This suggests the primary goal is to trick the user into visiting a malicious site, likely to download further malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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-500-free-spins-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
stream_003_off00003356.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3356 27336 bytes
SHA-256: 56e5f920aa8f04f6025c940cb523d3eb2a876ab69ef7a704478ab082f49b2fe7
font_01_sfnt_off000071e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E0 18192 bytes
SHA-256: 125a73f883adbce2d9ba98dbcdb707663d1ca3c21f762afcc3d4ea8c4cd052f9

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