Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ab96bcbbfc5d47d…

MALICIOUS

PDF

34.8 KB Created: 2021-06-18 20:44:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ea7600ecaf49e125bbe90e6fdefaa8b8 SHA-1: 6ab9c726b2af70f4ec0baa7714d0b9014d3427aa SHA-256: 1ab96bcbbfc5d47dd7572bd3ae170458666f7f469e810644e85329abef76c6f7
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA and a download lure, aiming to trick the user into clicking a malicious link. The embedded URL, http://netcdn.co/app/431946152/how-to-hack-admin-in-any-roblox-game-game-hack, likely serves as a redirect to a second-stage payload. No scripts were extracted, but the combination of the fake CAPTCHA and download button strongly suggests a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/how-to-hack-admin-in-any-roblox-game-game-hack PDF link annotation
    • http://library.atim.ac.id/repository/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/pokemon-go-free-808-pokedex_GM1094591345.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/robux-help-com-to-earn-free-25k-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/wurst-minecraft_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/como-hackear-ropa-en-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-hack-tool-apk-download_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-coin-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hacks-to-walk-through-walls-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/haktuts-coin-master-free-daily-spins_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
font_00_sfnt_off000031a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A6 21744 bytes
SHA-256: cbc382c913ede1b78eca948f7b2ca00c11035361e424704e9b2c8f7d111089fd
font_01_sfnt_off0000618b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618B 19552 bytes
SHA-256: 0d1eeb67e2038e38c97bfffb86dd7f36708239b1daaa72e1e56af3453e43caa4

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