Malicious PDF — malware analysis report

Static analysis result for SHA-256 3527c3f66a08d26d…

MALICIOUS

PDF

40.7 KB Created: 2021-05-16 07:32:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 730eed9fd9d6aa4f78530d3583511d96 SHA-1: 59b5910c76b5f17574d50c57bec833fcf3e445a7 SHA-256: 3527c3f66a08d26d63d89df2542f97ca85a1ea91bdbb0329ec895b558e9caa89
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, masquerading as a "free generator / game hack". The document body and heuristics indicate a lure for game-related cheats or currency, likely leading to a phishing or malware download site. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-daily-spins-coin-master-game-hack In PDF document text
    • http://salon-vyshyvanka.com/images/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/robux-offer-wall_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/roblox-free-followers_GM431946152.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
stream_003_off0000453c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x453C 24132 bytes
SHA-256: 2038fc1030edcc0a470fe3baea972bec8284fc1cc47c674310b41f3919548d96
font_01_sfnt_off00007c73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C73 18308 bytes
SHA-256: 55eaac4e6bbee5e06de7435d22c867d27a3c8151a397b13177f5239675c95764

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