Malicious PDF — malware analysis report

Static analysis result for SHA-256 3296688e517ad506…

MALICIOUS

PDF

37.4 KB Created: 2021-05-20 14:19:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b8864a677566aa3fc09a44482f051032 SHA-1: 8a794ecfc3fe67ba9a755e05bad72c1f2296528d SHA-256: 3296688e517ad50624cb64b6ef2815f0185d665cfa1160b463b33f4c8c651ea8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising "game hacks" and "generators" to lure victims. The primary malicious URL identified is https://netcdn.xyz/app/431946152/roblox-piano-hack-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a social engineering lure designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/431946152/roblox-piano-hack-game-hack In PDF document text
    • http://www.mikramarine.gr/images/play-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mikramarine.gr/images/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://www.mikramarine.gr/images/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.mikramarine.gr/images/near-tiktok-free-fire_GM835599320.pdfIn PDF document text
    • http://www.mikramarine.gr/images/coin-master-free-spin-app-iphone_GM406889139.pdfIn 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
font_00_sfnt_off0000339f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x339F 26348 bytes
SHA-256: 3ba76b144f1113925c45f9ab81d42dca6d903f6c850f63f1e5f729b900479ada
font_01_sfnt_off000070a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70A6 18456 bytes
SHA-256: b3a5bdafa913fbeb08409da0979c792cb3491f79dd739ad0ffcb7a8a40d00987

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