Malicious PDF — malware analysis report

Static analysis result for SHA-256 a72372579dc2d9f1…

MALICIOUS

PDF

45.9 KB Created: 2021-05-20 00:07:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 194abff99497174fbe1ae40aaaf7b141 SHA-1: d0a3290afb72c370e6f38333946c3f5b193bfebd SHA-256: a72372579dc2d9f1b66c897d9dd5733257e04c10d2d5b9b97d98cef97e89a10f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, disguised as "game hacks" or "free generators". The primary malicious URL identified is https://netcdn.xyz/app/479516143/toolbox-for-minecraft-windows-10-game-hack. While no scripts were directly extracted, the PDF structure and heuristic firings indicate a lure to external malicious content, likely leading to further exploitation or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/toolbox-for-minecraft-windows-10-game-hack In PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c7e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C7E 24560 bytes
SHA-256: b5588fe7e303f7b1878ac90c9f14ec3e444b5cb9b052cbdf0eddd892bd07d7e5
font_01_sfnt_off0000848a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x848A 3128 bytes
SHA-256: 801f6fa60decd1add2f223f91580103c35e150c924465f86a7a572b3e00674f9
font_02_sfnt_off00008eca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ECA 18968 bytes
SHA-256: d46e351321a59792d0dfcc693b7f7d925f1f4cf90c5f01a19a24ca355f4b74b5

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