Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c407392952436ff…

MALICIOUS

PDF

42.6 KB Created: 2021-05-12 20:02:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6b1dca3859bbf7a269f84695dcabe7f8 SHA-1: 2a8f76cfb27e833c7b9f4c210605944d425a3d59 SHA-256: 6c407392952436ffb2a0150aab5103a00bb697696f245e3ebea2de06e77d1e36
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, one of which is identified as a malicious redirector. The document body and heuristics suggest a lure for game-related content, such as 'free generators' or 'hacks', to trick users into clicking the malicious URL. The presence of embedded URLs and the nature of the lure indicate a phishing or malware distribution attempt.

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/minecraft-java-edition-free-download-game-hack In PDF document text
    • http://lib.unwahas.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-robux-place_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/roblox-girl_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-free-master_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://www.freenom.comHeyIn PDF document text
    • https://discord.ggIn 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_off00004a4f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A4F 25152 bytes
SHA-256: b338bea40df89c1edb9d01851c0c7ae7d25986c1ea6978c5c1ae26783f5cb179
font_01_sfnt_off0000831f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x831F 18572 bytes
SHA-256: be0be2e0bd1478f571662982334261f36152068b9a395b749ff064ff651796b1

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