Malicious PDF — malware analysis report

Static analysis result for SHA-256 46ecd9f37ab4fa66…

MALICIOUS

PDF

44.7 KB Created: 2021-06-08 23:26:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1bca14921831a48e3ae8c13c4cedd198 SHA-1: da8d3e64084eba8253ae1a8c86f0edc84a878867 SHA-256: 46ecd9f37ab4fa66552e13ff77702247a54b0c21e5dbbb27c7c5da92e61814f4
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with malicious content. It embeds external URIs pointing to potentially malicious websites, such as the one hosted on netcdn.tw, which likely serves as a landing page or download source. The document's content and embedded links suggest a social engineering tactic to deliver a payload or redirect to a phishing site.

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/sword-fighting-roblox-game-free-to-copy-game-hack PDF link annotation
    • http://brokermortgages.com/images/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-but_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-robux-hack-cheats-generator-free-robux-and-tix_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • http://brokermortgages.com/images/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-hack-ios_GM431946152.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_off00005246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5246 23548 bytes
SHA-256: 9a1307276ac798c4b8798aa8a258072f01606436b4cd74bd5247ea3835fa4450
font_01_sfnt_off0000877c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x877C 19808 bytes
SHA-256: 574e6d2f759bba2183ec8f904fdaec5b864d6be2a4d93178edd025750922a031

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