Malicious PDF — malware analysis report

Static analysis result for SHA-256 286173b0094b8774…

MALICIOUS

PDF

42.1 KB Created: 2021-05-14 17:11:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c194cdb67d4c7dfe090291b492dc9971 SHA-1: a91ca0bf9d0e8f1806acdc0a19116c709455a8f2 SHA-256: 286173b0094b87746662ad7be28bc9330491c6dc5be6f4844a06e1045932d1df
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically targeting users with 'game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/479516143/clients-minecraft-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector workflow designed to lead users to potentially harmful content.

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/479516143/clients-minecraft-game-hack In PDF document text
    • http://www.vktzunami.cz/images/whats-robux_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/cm-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/roblox-generator_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.vktzunami.cz/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://www.vktzunami.cz/images/rbxfree-com-free-robux_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_off000049a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A3 25840 bytes
SHA-256: 82fb74d4548a16e61fc2f33487b67afb43b2a7f0856b38db825f06492a683ada
font_01_sfnt_off00008473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8473 17644 bytes
SHA-256: b1e6b7721ac76cdb58ab715170998ed65443e780ca06fc40eb483816b5c8893a