Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ad6be118e1da199…

MALICIOUS

PDF

48.4 KB Created: 2021-06-03 06:30:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c709c94d74d18e311415975e9b5c9ede SHA-1: c90da54bb1824443ff8f303cee71ef9dbba86f57 SHA-256: 8ad6be118e1da19955f8030e939861b4e2cda93a84447a6d6906934de404db39
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free Roblox accounts' and 'game hacks'. The document body and heuristics indicate a lure designed to trick users into visiting these malicious sites. While no scripts were explicitly extracted, the nature of PDF redirection often involves JavaScript to facilitate the malicious chain.

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/free-roblox-accounts-with-builders-club-game-hack In PDF document text
    • http://elibrary.perludem.org//repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/admin-script-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/pokemon-go-free-and-home-transfer_GM1094591345.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/pubg-uc-kaise-khariden_GM1330123889.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-mm2-hack-download_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-appsfor-coin-master-daily-rewards_GM406889139.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_off000051a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51A2 26560 bytes
SHA-256: f0c2cd4bd8b3b421db771704b541a2a7d2ce67db744967f1600bf72d229cdba8
font_01_sfnt_off00008f42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F42 2852 bytes
SHA-256: 6c344bff8cb11efcfa323542d02369dac514041cc19c9a49b1052cb126dcbdcf
font_02_sfnt_off00009904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9904 18848 bytes
SHA-256: 9ea8e82fd5ecc9ab188d724867cc57ca86b9540cef78e37352182fc5094430e1

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