Malicious PDF — malware analysis report

Static analysis result for SHA-256 d40960f2b7ab5b9f…

MALICIOUS

PDF

36.7 KB Created: 2021-05-12 12:33:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e371135b2e2f88c59b9337442ccb1f5e SHA-1: 61feb093c1254b8809423b54d9ddbdfba21e1b65 SHA-256: d40960f2b7ab5b9f0be9c9999abb48d76d0f704a8273e467eb8fefa88a5a6162
130 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting a 'Coin Master Game Hack'. The document body includes a clear call-to-action to 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', reinforcing the lure. The primary attack vector appears to be social engineering via a malicious attachment, leading users to a potentially harmful redirector.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

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-game-hack-online-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_off00003556.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3556 25160 bytes
SHA-256: 5c43edf68235b961889028fab2332097d1145115e1e0d0f94a4aeb42bef91f1e
font_01_sfnt_off00006ebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBD 18052 bytes
SHA-256: d1f43af122370383ae58c4585611a4352a6c99a7dc94edaa9bbc573f79be5f9d

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