Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2d0dae4c0fe58f0…

MALICIOUS

PDF

44.9 KB Created: 2021-06-09 03:42:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: aa179e44347021fab7d713f26d9085f7 SHA-1: d5e46e269d65e49993f6f04f7daa9419c5accbcb SHA-256: b2d0dae4c0fe58f0dbeb2446d0b4c3309ca28c9127a3346eccc43941f4e855a1
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA or human verification prompt, a common social engineering tactic to trick users into interacting with malicious content. It also contains multiple embedded URLs, including one pointing to a suspicious domain, which are likely intended to lead the user to download a second-stage payload. The ML classifier also flagged this PDF as malicious.

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.tw/app/431946152/como-hackear-en-roblox-a-la-gente-game-hack PDF link annotation
    • http://sbm-nn.ru/images/coin-master-free-online_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-a-free-skin-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/wurst_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-roblox-fortnite-gameplay_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-hack-cheat-free-robux-generator-online-exploit_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/best-roblox-jailbreak-hack-2021-mod-menu_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/hack-para-coin-master-sin-verification_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_off0000513e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x513E 25424 bytes
SHA-256: 4629f1d63ccc587cb8ec304c1985c2ead154cc054f7fd43eb6761c91509a9327
font_01_sfnt_off00008c37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C37 18548 bytes
SHA-256: 478997a79c9e2272ad5aa90bd811d6e8491379c41a5791b367f99f0e06e5376f

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