Malicious PDF — malware analysis report

Static analysis result for SHA-256 abd8b1eef8df6f4a…

MALICIOUS

PDF

44.9 KB Created: 2021-06-08 18:21:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7a370575569f9fa68a87dd02e79ad561 SHA-1: a9ad40a28e1a071c2cd64a77fd4a11e66ddac91b SHA-256: abd8b1eef8df6f4ac8c23492b180f0d01f252672f26c4e55acb324fbfbb26b75
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' content. The primary malicious URL identified is https://netcdn.tw/app/431946152/kazok-roblox-hack-script-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a lure to malicious websites, likely for phishing or malware distribution. The document body contains obfuscated text and URLs, further supporting the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/431946152/kazok-roblox-hack-script-game-hack In PDF document text
    • http://pustaka.fk.unand.ac.id/repository/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/freer-pro-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-bubble-gum-simulator-cheat-version_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-dragon-ball-z-final-stand-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/commands-for-hacking-admins-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-robux-2021_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_off00005304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5304 24600 bytes
SHA-256: eee092a86001c16ea66b4008c0b9687289b4c8a7585afba86f5c53a37d43e030
font_01_sfnt_off00008b77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B77 18664 bytes
SHA-256: e51ce1c61da79e822743b6a87b5874657ddc537eee8611d1e3d523e69dfae8ae

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