Malicious PDF — malware analysis report

Static analysis result for SHA-256 f01e2f1dcb1b5bcc…

MALICIOUS

PDF

43.6 KB Created: 2021-06-04 02:39:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4a98bc6556dac2e3eec34df6364e588e SHA-1: 9b766cb82bd6eeb01ea6bc787d6e8a8c6fdc1030 SHA-256: f01e2f1dcb1b5bcc114b056227451093db3c1220e7eb0a935e0159a087178f64
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA to trick the user into clicking a link, which is a common social engineering tactic. The embedded URL, https://netcdn.online/app/406889139/latest-free-spin-coin-master-daily-game-hack, likely leads to the download of a second-stage payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/406889139/latest-free-spin-coin-master-daily-game-hack PDF link annotation
    • http://www.digilib.uim.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-homepage_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000507c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x507C 24076 bytes
SHA-256: 0c2d482db53c152aeffb3208660821cb6711a4f4d951f523d2fcf7901a9aa18b
font_01_sfnt_off00008794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8794 18308 bytes
SHA-256: 33b54ae1ad693c119f0cea53781b273ddfe293e057ee7515dcb4c42791ffe801

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