Malicious PDF — malware analysis report

Static analysis result for SHA-256 24441ea400752c49…

MALICIOUS

PDF

42.9 KB Created: 2021-05-16 20:07:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0ba9ba0f2c92b04fbf0d85017a68544b SHA-1: 6a774a4d79eced4699533b5ab0d778acc212d88f SHA-256: 24441ea400752c49fdc3ba28a95ead4befb05f3bf42e24a00d82f957c9db3bac
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with the document. It also embeds multiple URLs, one of which is directly linked to a fake CAPTCHA heuristic. The document's content and embedded URLs suggest a phishing or scam attempt, likely to lead to a malicious download or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-robux-obby-2021-game-hack
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/minecraft-rtx-download-free_GM479516143.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/real-free-robux-generator_GM431946152.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/free-spin-coin-master-instagram_GM406889139.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/coin-master-apk-hack-35-8_GM406889139.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/free-robux-no-verification-required_GM431946152.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/robux-for-surveys_GM431946152.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/roblox-free-roblox_GM431946152.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/roblox-free-robux-website_GM431946152.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/coin-master-app_GM406889139.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/coinmasterhack-club_GM406889139.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/free-robux-come_GM431946152.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/coin-master-hack-download_GM406889139.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/free-robux-2021-no-human-verification_GM431946152.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-trick_GM406889139.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/free-spin-link-in-coin-master-game_GM406889139.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-and-coins_GM406889139.pdf
    • http://mlc3.ma-alirsyad.sch.id/__statics/gudangsoal/files/easy-robux-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047c9.bin
631bfe017010cb45be4674d7e3f9b3d4e479e5ea45c2e98965123bc862520e7b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47C9 25720 bytes
font_01_sfnt_off00008419.bin
4ee57ed15e8700d5e4346dbed35fcc2f6ba8dbed04d546ac38088c27601a53c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8419 18596 bytes

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