Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a93e8d19ef36f53…

MALICIOUS

PDF

36.8 KB Created: 2021-05-13 16:38:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 168fb3e364133196b5a064a61601d1ce SHA-1: e3ac18b19a897ce2bd1cfadcc37047691713ba0a SHA-256: 7a93e8d19ef36f53ae81a50ba7641ee4d249fff3baf7aad2bac55014aa9475e6
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that are identified as malicious redirectors, specifically luring users with the promise of game hacks. The document body and heuristics indicate a clear intent to drive users to the malicious URL, likely as a phishing or malware distribution lure. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/get-free-spins-link-in-coin-master-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_off000037b5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37B5 24348 bytes
SHA-256: 5e740f639c73c614d09dafa852676bb33a0850be47a5f381dcdef2572125f24e
font_01_sfnt_off00006f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4A 18056 bytes
SHA-256: f380940be241d9e71387f2f3589a8e8f230fef98b18032ac799d1791a5bb6cec

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