Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4350cdda41880d9…

MALICIOUS

PDF

41.7 KB Created: 2021-05-01 13:05:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 807a228f5ce9732d5832257a87167a32 SHA-1: 0bcfe8704cbee46bda4881cf350db5bd8431968d SHA-256: d4350cdda41880d9cdd1135e3ec62bda6edcba71e6cc28d193f335379e2f78aa
82 Risk Score

Malware Insights

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

The PDF document contains a lure for free Roblox card codes and a generator, directing users to click a link. This aligns with a social engineering tactic to trick users into downloading potentially malicious content or providing credentials. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple embedded URLs further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.xyz/app/431946152/free-roblox-card-codes-november-2021-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/hack-point-parkour-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/get-free-robux-by-doing-nothing.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-headless-horseman-free.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-fly-hacks-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/jukebox-free-script-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-its-free-sparta-remix.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-dragon-ball-z-final-hacks.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-models-rides-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-pins-for-robux.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/regular-roblox-free-robux.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_003_off00004263.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4263 26676 bytes
SHA-256: ee23d3e17e2376d67a5f8f130f8d0d0af879b674966916261d2e63a76edf5028
font_01_sfnt_off00007eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB9 19128 bytes
SHA-256: cb567066b708bfd4a851c935f6e10d8b10528d51b9129cd15c0f9aba9e7b1e3a

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