Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e44880c445a447…

MALICIOUS

PDF

44.9 KB Created: 2021-06-08 14:51:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 0ce3adbe674098c7fd66751f3e5676ec SHA-1: 20ddcca8b17bfacd7bf52d9c06492865d39e4979 SHA-256: d3e44880c445a4473f9e0999ea8f67b05a7491b8c2867d7fce188214c01026cd
160 Risk Score

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/how-to-hack-roblox-jailbreak-easy-game-hack In PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-free-spin-links-december-30-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/tiktok-free-view-500_GM835599320.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-download-hack-ios_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_off00004fff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FFF 25412 bytes
SHA-256: 2bcc88cbd749ea5995650935d45d9567824dc687981a4e88a4057f6ad8de50a9
font_01_sfnt_off00008b4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B4C 18812 bytes
SHA-256: dd7e8df008f325c1c7766546fadf37bb6e50d311104f5927f4d2c3c20482b58c

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