Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bb6f14aa2c99d7a…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 21:49:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2ace5e5306378e12b4aca9eb9c83b7f9 SHA-1: c2ca55ae6328396264d9b1b8b45df99bb7f6eec0 SHA-256: 8bb6f14aa2c99d7a80c1b197151a2053d2825fc66f12b353a8e653c906db09c7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as game hacks or generators for popular games like Roblox. The primary lure is "Is Roblox Free On Ps4", directing users to a malicious URL. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to redirect users to potentially harmful websites.

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/431946152/is-roblox-free-on-ps4-game-hack In PDF document text
    • http://lib.uho.ac.id/library/repository/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-robux-actually-works_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/microsoft-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/robux-redeem_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-roblox-accounts-with-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_off00003181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3181 22120 bytes
SHA-256: 31716ebdf96581984bde92440fbee7cded1aef07f8f582168c76393967e700bd
font_01_sfnt_off00006285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6285 18868 bytes
SHA-256: 824c90c9f10edf8913ce2cc5e6fccfca0491a4cd932fa6552270a04d257ad04e

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