Malicious PDF — malware analysis report

Static analysis result for SHA-256 96bc8dca7cb0a07c…

MALICIOUS

PDF

36.1 KB Created: 2021-05-17 18:38:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e2d00506aa410332a1af54b6e0537ee9 SHA-1: 43de059229f39c5cb5dd060d2ceb59c672269b5a SHA-256: 96bc8dca7cb0a07cb2e58575f0249f5efee1823da35636d295a7423292db59b7
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector infrastructure, specifically advertising a 'Coin Master Free Spins No Survey' generator. The heuristic firings confirm that the PDF links to malicious redirectors and employs a game hack lure. Although no scripts were extracted, the document's structure and embedded URLs strongly indicate a phishing or scam attempt designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier clean score 0.0283

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-free-spins-no-survey-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_off00003420.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3420 24444 bytes
SHA-256: 5f0f323413f19cb5e1301db8074df82d9727657ee2f1a63fb51e574d6bb4d899
font_01_sfnt_off00006b81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B81 18320 bytes
SHA-256: 8f8c071623a7703d27897fee0415069e7501bbca86f42ef797abe0a074016bd4

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