Malicious PDF — malware analysis report

Static analysis result for SHA-256 3df354a0184ff24f…

MALICIOUS

PDF

49.1 KB Created: 2021-06-10 14:55:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 20f356c9448a809969c19e263ebbb85f SHA-1: 1aed458b8fc1e4de200aaee21ebcb58c208ceb34 SHA-256: 3df354a0184ff24f1b3d61ff934035e08e65b22795d554935132a15ccb079d47
160 Risk Score

Malware Insights

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

The PDF contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The heuristic firings indicate the PDF is designed to lure users into clicking these links, likely to download further malicious content or exploit vulnerabilities. No scripts were extracted, but the presence of embedded URLs and redirector links strongly suggests a malicious intent to compromise the user's system.

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.tw/app/479516143/minecraft-noob-vs-pro-vs-hacker-vs-god-game-hack In PDF document text
    • http://library.atim.ac.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-free-robux-free-robux-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/dll-for-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-muscle-shirt-free-shipping_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-cheats-how-to-get-free-obc_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-on-prison-life-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-giveaway_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_off00005479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5479 27940 bytes
SHA-256: 66fccd6a43d9b56e45c5148d0aa8b2c9f783a0c56b3d9f260e030c7d7ada921a
font_01_sfnt_off000092a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92A8 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00009cb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CB8 18500 bytes
SHA-256: 35163f059b41a7a3602679841a335cd83055ee85c0a72342166b4475486ea273

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