Malicious PDF — malware analysis report

Static analysis result for SHA-256 465830d2cd3312d4…

MALICIOUS

PDF

47.6 KB Created: 2021-06-11 09:00:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d2abc3ac4133ba3b5c8e2e6f3b06cd39 SHA-1: d29ca789f9b7ae8a8ba8daafc064e3c8478b82a5 SHA-256: 465830d2cd3312d44d0d67a095a584f7a48f3f5bf3439f6bfd553726bba5a937
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a malicious redirector link and a visual download button, strongly suggesting a phishing or malware distribution attempt. The ML classifier also flagged the document as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure indicate an attempt to trick the user into downloading a secondary payload, likely hosted at one of the provided URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 3

  • 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/hacken-roblox.denn-game-hack In PDF document text
    • http://librarystkippgribl.com//repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/google-moon-active_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-roblox-gui-place_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/tiktok-free-package-dialog_GM835599320.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004ffd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FFD 26608 bytes
SHA-256: 5fbe50b3b06207ac2dca486b1201fb95ea521ba0cdeffd408762f1439d207424
font_01_sfnt_off00008cec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEC 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off0000969d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x969D 18456 bytes
SHA-256: 5896f417195487887b1fee35894ac31937367624f2d47ae5a9642d3473953881

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