Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9e0f86c77fce0cb…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 08:40:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 580e53187b04fbe51eef5c744e45b15b SHA-1: 249766bbc824712035f78176b9e11c249076a60f SHA-256: f9e0f86c77fce0cb84781f9e2b9d05c694950451a3765b96e24614405c7f6ad4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them by promising free game items or hacks. The primary link, http://netcdn.tw/app/835599320/tiktok-free-auto-liker-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a social engineering tactic to drive users to potentially malicious websites, likely for credential harvesting or further malware delivery.

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/835599320/tiktok-free-auto-liker-game-hack In PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-cheat-to-the-end-of-any-roblox-obby_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/roblox-robux-hack-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/synapse-roblox-free-download-2021_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/hacking-curleyhairs-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-make-a-group-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/body-roblox_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_off00003386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3386 22228 bytes
SHA-256: 54a589652a254a629977f5d27558602bc19df69ecff10b58d0b5eec6f953a85b
font_01_sfnt_off000064bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BC 18112 bytes
SHA-256: dc69b37b26d21538895731fa863a802c51812570096c709c12d2abf89c102e7c