Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b4ae959f217bda…

MALICIOUS

PDF

49.8 KB Created: 2021-06-04 06:31:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5e3495b166ffeb132b4aa48800217f5c SHA-1: 70099af42c7fbaf9787750d3bd1009c9c07f9c98 SHA-256: 03b4ae959f217bdad3f6770ffd1f87bb0675eb3c2b3dd64902f7c49472f53203
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "free generator / game hack" lures. The document body and embedded URLs promote free game items or hacks, aiming to trick users into visiting the malicious infrastructure. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/roblox-redvalk-free-code-game-hack In PDF document text
    • http://libnh.stikesnh.ac.id/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-bloxburg-game-on-roblox_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000528d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x528D 27292 bytes
SHA-256: 94b3293f706d5a41482bc6d0283f0ff34ba8f558525d825769cb87e3cb8e6a35
font_01_sfnt_off0000926d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x926D 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00009f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F15 18632 bytes
SHA-256: 39bc20a8c27b715ff324d614903d70fd4a49aa30f69c71fed2ad4fa3ca8410eb

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