Malicious PDF — malware analysis report

Static analysis result for SHA-256 5744dfeb3212e632…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 00:37:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9261d416913058b8f8b7a6aed4578221 SHA-1: ca7920417e7f7fbbc29e7e3cd06870a38ad90291 SHA-256: 5744dfeb3212e63289d95802d759e9d568fa2babe5eef5a094c77269114c446a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs and a prominent external URI pointing to game-related hacks and cheats, suggesting a lure for users seeking such content. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent. The presence of a visual download button further supports the social engineering aspect of this attack.

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/roblox-hacked-accounts-list-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/rbxboost-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-aimbot-free-download_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/hack-version-of-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/pokemon-go-font-free-download_GM1094591345.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-copy-escape-obby-for-roblox-game_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/roblox-comcom_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/apk-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/denisdaily-free-robux-app_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-hack-roblox-with-inspect-element-2021_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/make-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_off000030a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A8 21932 bytes
SHA-256: aa58b8b05514b8b36cac70e50dcd2105f6d2417a0d46223e80ec1747a284428f
font_01_sfnt_off0000613d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613D 19196 bytes
SHA-256: 2354f61238ce38ceaa6bb2dc8bd62f8c720a6367dd27d5b4fd20c885c9a0b347

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