Malicious PDF — malware analysis report

Static analysis result for SHA-256 2599219f663e3aa1…

MALICIOUS

PDF

41.9 KB Created: 2021-05-20 00:39:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 00db90a8dff8e2c1e1bf14aac3252a2e SHA-1: f10fde6536b4ae8d8332fa9c6c90f79adf069310 SHA-256: 2599219f663e3aa1c5c332dc20c8f362f11669e7c85413de8e341d6cd3519b9e
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 links. The embedded URLs, such as 'https://netcdn.xyz/app/406889139/coin-master-free-spin-and-coin-links-game-hack', likely lead to further malicious content or scams. The ML classifier also strongly indicated maliciousness.

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/406889139/coin-master-free-spin-and-coin-links-game-hack PDF link annotation
    • http://spentulib.com/search/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://spentulib.com/search//repository/coinmaster-links_GM406889139.pdfIn PDF document text
    • http://spentulib.com/search//repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search//repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search//repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search//repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search//repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search//repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search//repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/coin-master-free-spins-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
stream_003_off000047e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E5 25304 bytes
SHA-256: c25ca76e1285ea9f2f6bce352f1ef040a3d62950fad4b62208691413322bed95
font_01_sfnt_off00008199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8199 18228 bytes
SHA-256: ab1c4cdc214a6baf81a15e2f62a40ea9cfbbbf407f0f3dd1c7564e467cf0dae2

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