Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6c4f241fe28924b…

MALICIOUS

PDF

39.4 KB Created: 2021-05-10 21:06:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d8d24c3e0bba1121f3eeddc74dbb4d31 SHA-1: 482ebdf2f9c67d2f5ec97020febbb17b1c19b9d8 SHA-256: e6c4f241fe28924bf4be98a7f639092f81b7ccfecaa53e2c7bf353e42e10fdc2
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting a "Coin Master Hack Spins" generator. The document body and heuristics indicate a lure designed to entice users to click these links, likely leading to further malware downloads or phishing attempts. No scripts were extracted, but the embedded URL is a high-confidence indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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-hack-spins-ios-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003398.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3398 26532 bytes
SHA-256: 117b104492005fb33460aa468112327b959119c9beaa3349b07a08ec4bf93e8c
font_01_sfnt_off00006fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA0 2924 bytes
SHA-256: 89b375b3099c16285f8fe3c63d3b9e52cb99b52dd2caab822764707661633145
font_02_sfnt_off000079b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B4 17892 bytes
SHA-256: 8a2199a6fb9e6551992738fdb7d2625a8f143b5a9fef4499610b6e02eb0e5450

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