Malicious PDF — malware analysis report

Static analysis result for SHA-256 134bfaa225798f8f…

MALICIOUS

PDF

36.0 KB Created: 2021-05-19 08:02:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 495369051bdd78f2f4218a9c04912626 SHA-1: 47c8e9e968c5a433f0749693371e01116c5e89e3 SHA-256: 134bfaa225798f8f9a5297ed4b917cd39ee71a93a963976cf665519d1e923f7f
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to known malicious infrastructure, specifically advertising a 'Coin Master Daily Free Spins Link' and 'game hack'. The document body also contains the malicious URL and a call-to-action phrase, indicating a phishing or scam attempt. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

Machine Learning

  • Nyx PDF Classifier clean score 0.0228

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-spins-link-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_off00003068.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3068 24040 bytes
SHA-256: a69e92a6392c36724a46bcc765c1f8e7d4004680967f5ad0e2ca847c733d9316
font_01_sfnt_off0000679c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x679C 19552 bytes
SHA-256: eea60ccb8bd845c2f4a9ba4d8b7a1f8d8caf72af6a137ef45c8fb0a62fce7d0d

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