Malicious PDF — malware analysis report

Static analysis result for SHA-256 16c69447db86e6fa…

MALICIOUS

PDF

44.2 KB Created: 2021-06-09 02:43:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b8f3a1eebcb4e00a3c28852d93e8c01a SHA-1: 9c13e4adc33f03da3fd54c4c71953760056ea1b2 SHA-256: 16c69447db86e6fa872fb32c998db7f6d63964bb0a66575092e1b540840435eb
82 Risk Score

Malware Insights

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

The document presents itself as a lure for 'Roblox Hacking Chrome Extension' and contains a fake CAPTCHA, a common social engineering tactic to trick users into downloading malicious content. The embedded URL points to a suspicious domain hosting what appears to be a malicious extension or payload. Multiple other URLs hosted on similar domains suggest a broader campaign distributing game-related cheats or hacks.

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/roblox-hacking-chrome-extension-game-hack PDF link annotation
    • http://sbm-nn.ru/images/coin-master-online_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/wurst-112_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_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_off00004e9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E9C 24756 bytes
SHA-256: 37fc99cbc484dcd4bc4bedd7f93f0eb1a0847baa4535a2c5e40e337ae5647de0
font_01_sfnt_off000087b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B7 19120 bytes
SHA-256: 128e2712684648a1da2fe19fe8970490e472c9e3d4190d29446fefb3a17b1c10