Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b9f5dfe47ec6f48…

MALICIOUS

PDF

35.8 KB Created: 2021-05-14 16:05:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 29c90dddbbd6901705f5dfe23f7ef668 SHA-1: 8734debd0ba13eddc327dcf674afff9d66011536 SHA-256: 9b9f5dfe47ec6f481cace9146b15c0b4337e6a47e31fab1875841e51259d2378
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising 'Coin Master Codes' and 'Game Hack'. The heuristic firings indicate that these links are designed to lure users into clicking them, likely to download a secondary malicious payload. The document body and embedded artifacts do not contain executable scripts, suggesting the primary malicious functionality relies on the embedded URLs.

Machine Learning

  • Nyx PDF Classifier clean score 0.0265

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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003332.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3332 25716 bytes
SHA-256: 55d21ebbb5f0e70c9f57fa89f9d219544753d788904abefef23979d9184706be
font_01_sfnt_off00006c45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C45 17720 bytes
SHA-256: e3dc30cd69473f08b9483bb660e9aeaccc8f6f74c3e4f353697525059d592d8d

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