Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce08c3565e8bf125…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 13:01:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 2dfb049129b50e65673b97d7c4b7afad SHA-1: 5b1b938d215b2d560ae0ce1137f1bbe8689b10ff SHA-256: ce08c3565e8bf125a6ff176ec0accdd2b4db510192c530070a1c06b3bf3759a2
160 Risk Score

Malware Insights

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

This PDF document employs a lure related to game hacks and cheats, directing users to a known malicious redirector. The document body and heuristics indicate a strong likelihood of redirecting users to potentially malicious content or malware downloads. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit user interest in game cheats to deliver a payload.

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.tw/app/406889139/coin-master-hack-apk-game-hack In PDF document text
    • http://pustaka.ust.ac.id/repository/script-lua-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-strucid-hack-script_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-tdm-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/minecraft-game-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-hack-roblox-2021-may_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-cheat-engine-speed-hack-no-shutdown_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/athena-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/hacking-john-doe-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-roblox-script-injector_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-hack-apk-ios_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-roblox-dollars-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/get-free-robux-with-editthiscookie_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-jailbreak-how-to-get-all-cars-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/win-free-robux_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_off00003358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3358 22712 bytes
SHA-256: e8e87f626d0c7a760828f4d5af850918672d29ad20a17d083e3ecc8b80001459
font_01_sfnt_off00006628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6628 18180 bytes
SHA-256: 5b637a8a036eab97bffff91a515cae84fc40b6bddd589e778cc2e69a12b03167

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