Malicious PDF — malware analysis report

Static analysis result for SHA-256 2034c24176f113cf…

MALICIOUS

PDF

47.0 KB Created: 2021-06-09 09:41:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 92e630a62e72ee603e1144d1d27de12c SHA-1: c619d9590b009aa874e538282331ea4b0c7f5bb1 SHA-256: 2034c24176f113cf1f168471b761ca646a7707469b8901c6c59daddc781ce2e3
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure to trick users into interacting with malicious links. The primary link, https://netcdn.tw/app/431946152/is-there-a-possible-way-to-get-free-robux-game-hack, is likely intended to lead to a scam or download a secondary payload. The document body and embedded URLs suggest a focus on 'free Robux' or game-related scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.tw/app/431946152/is-there-a-possible-way-to-get-free-robux-game-hack PDF link annotation
    • http://brinicombe.co.uk/images/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://brinicombe.co.uk/images/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://brinicombe.co.uk/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://brinicombe.co.uk/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://brinicombe.co.uk/images/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • http://brinicombe.co.uk/images/tiktok-free-watch_GM835599320.pdfIn PDF document text
    • http://brinicombe.co.uk/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://brinicombe.co.uk/images/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://brinicombe.co.uk/images/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://brinicombe.co.uk/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/roblox-a_GM431946152.pdfIn PDF document text
    • http://brinicombe.co.uk/images/coin-free-master_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://brinicombe.co.uk/images/roblox-girl-avatar_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F8D 24844 bytes
SHA-256: 25b91ded0528b41a349fe04028c41f34fc8f17a7368911cebe204667c4e59509
font_01_sfnt_off0000888b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x888B 2872 bytes
SHA-256: 5a38050e56bfed6ba013c4835499ae05f4b57b22e606c9172dd4bc2ae7fd1207
font_02_sfnt_off00009247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9247 19236 bytes
SHA-256: 230528559897a0fac703f1af3629b7664d2b336826093f714c59d8559c79e1ed

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