Malicious PDF — malware analysis report

Static analysis result for SHA-256 29668d889b06d1c7…

MALICIOUS

PDF

44.5 KB Created: 2021-06-09 17:36:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a3b2476ee413104183300abfbd3e5aaf SHA-1: 6bfc3d8262b1841231cfcaa18efdc96506bd6e06 SHA-256: 29668d889b06d1c7a8c7b374a40643e7843646201cfcfd2a78c2c0fa810641ce
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to a known malicious infrastructure, specifically designed to lure users with promises of free game items. The heuristic firings indicate that these links are part of a redirection chain, likely leading to a malicious payload or phishing page. No scripts were extracted, but the document's structure and embedded links strongly suggest a social engineering attack.

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/free-robux-no-need-to-download-apps-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-robux-grayphiny_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/tiktok-free-online-games_GM835599320.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-best-roblox-exploits_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-airpods-tiktok_GM835599320.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-get-to-village-3-in-coin-master_GM406889139.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
stream_004_off00004f79.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F79 24932 bytes
SHA-256: 85431773065543dde3ba00a50cccb8308893615e5a8ecc93496f529b48cddf67
font_01_sfnt_off0000892c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x892C 18996 bytes
SHA-256: abed7c2a6df0b8431c003ef752bd6538bad6938c63d1e41feb28de4ba61e39cd

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