Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b96c251fca2637f…

MALICIOUS

PDF

34.3 KB Created: 2021-06-20 04:17:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0b20191e853eba5da157a08d1380dd0a SHA-1: 53143c5ad0d4aea76aa8c67f1ab5a3d4004444d5 SHA-256: 7b96c251fca2637fc6db319d5d7a6bd00a340596e4233984fb56820ab18b5c42
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The heuristic firings indicate that these links lead to known malicious redirectors and are designed as a lure for users seeking free generators or game hacks. While no scripts were explicitly extracted, the nature of the links and the ML classification suggest a malicious intent to redirect users to potentially harmful content or further stages of infection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-deutsch-free-download-game-hack In PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-stuff-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-x-ray-hack-autohotkey-download_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/no-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-bloxburg-free-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/follower-fr-tiktok-free_GM835599320.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-minecraft-java-server_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hacks-for-counter-blox-roblox-offensive_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-demon_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-without-human-verification-real_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
font_00_sfnt_off00002f39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F39 21888 bytes
SHA-256: d802b150d91cca3fe825b024de2fe621ee9f255151021fc937fef023c4ed57db
font_01_sfnt_off00005f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F82 19568 bytes
SHA-256: 08b1274b54e33b34f4b7b87e59ad99f101a7cd87ec7e404d4df2e9636b18f089

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