Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd47d5f9c2ddde7f…

MALICIOUS

PDF

32.8 KB Created: 2021-07-01 13:30:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b48ffe29b35e5dfcc15b35ff010a42de SHA-1: 9207521162efbc6ea883027de9b8f73006958ba2 SHA-256: cd47d5f9c2ddde7fe2456f0f49cb09e53c15a3f6a70ad0d7f2be030fa469bfb6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains numerous embedded URLs and a call-to-action phrase, strongly suggesting it is a lure for downloading malicious content, likely related to game cheats. The ML classifier also flagged this PDF as malicious. The presence of 'cmd_GM431946152.pdf' in the document text indicates a potential attempt to execute commands or disguise a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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 http://netcdn.co/app/431946152/best-robux-hack-2021-game-hack PDF link annotation
    • http://library.unissula.ac.id/fe/repository/el-mejor-hack-para-roblox-indetectable_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/wurst-client_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/lua-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-hack-accounts-on-roblox-with-cmd_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/spin-coin-master-hack_GM406889139.pdfIn macro / runtime command snippet
    • http://library.unissula.ac.id/fk//repository/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-a-free-epic-face-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-free-groups-with-funds_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/pubg-uc-egypt_GM1330123889.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/cerberus-hack-roblox-download_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/hack-de-roblox-para-atravesar-cosas-facilmente_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/hacks-to-steal-robux-sign-up_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-no-verifying_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/wild-savannah-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repositIn macro / runtime command snippet
    • 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_off00002ab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB8 21832 bytes
SHA-256: 02958ba2175c2581a0cad20d42c7bd3e58530144f4cacf7ace1cc71b5889996d
font_01_sfnt_off00005aa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA9 19228 bytes
SHA-256: c6258a039b1223a7f06030b511c12f77f39d5fb0dbedc5077d4a08ad6ceb2708

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