Malicious PDF — malware analysis report

Static analysis result for SHA-256 369fa6cfe04cb8a4…

MALICIOUS

PDF

40.0 KB Created: 2021-05-14 21:01:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a538f220bc238a08fb477f9dc8b5c1d3 SHA-1: 03fcc7a66ef632124dc4a3b05b04f64cc03ca927 SHA-256: 369fa6cfe04cb8a4084fc405372c995ef364650f3da04fa1297ea139c76cc8aa
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a lure for a "Coin Master Free Spins" generator, directing users to a malicious URL. The presence of a download button and embedded URL reinforces the deceptive nature of the document. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest an attempt to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0127

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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000031e7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31E7 28708 bytes
SHA-256: f53b172f1237cbf60574ce0f58a6743972803ea78b0f0e13b528eb87d6e57ad9
font_01_sfnt_off0000723c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x723C 2880 bytes
SHA-256: 93b508a52e047ef4bff1d7d250d9aefd838e5a176ceb5e9be36ada0f8d333e07
font_02_sfnt_off00007c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2A 17884 bytes
SHA-256: 7b855ef2bb944b5b370c61480927ccad63ff31bdbf820bc1f0da9d35a10f5fb2

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