Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb6d50b56ffa3ce0…

MALICIOUS

PDF

42.6 KB Created: 2021-05-14 02:05:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 43766029fb8bbe167339bec4d005b060 SHA-1: 828127b2bc30edcd8a7532b91e0b02674db2efcd SHA-256: cb6d50b56ffa3ce055e387eea6348dfe6968b5d48ef1539722b9c9373fde98cc
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA and a call-to-action to trick users into clicking a link. The primary URL, https://netcdn.xyz/app/431946152/roblox-generator-no-human-verification-game-hack, is presented as a generator for the game Roblox, likely a lure for credential harvesting or malware download. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or social engineering attack.

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/roblox-generator-no-human-verification-game-hack PDF link annotation
    • https://pierrefabre-newsletters.gr/images/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/coin-spin-link_GM406889139.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://pierrefabre-newsletters.gr/images/how-to-hack-coin-master-ios-2021_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
stream_003_off000049e9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49E9 24600 bytes
SHA-256: 0a0eaf82a3264f2b148fd8d20218721999b349e850cb29e00a9542cc7d05223b
font_01_sfnt_off0000829d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x829D 18772 bytes
SHA-256: d79baf027547f44448cd8f3b6712cdcd19f331e765a1a7a1a1aa24219739a308

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