Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a93509e429264a3…

MALICIOUS

PDF

44.2 KB Created: 2021-05-13 20:19:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 67678c496c916d9de574cbf1ea356f93 SHA-1: 1cca8a5db1ea6f29ac6ea09fc8b306ec7bdc20ee SHA-256: 1a93509e429264a3d495b22894e670dfcb5356d89e8ab991b925d2987d156943
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, aiming to trick the user into interacting with a malicious link. The embedded URI points to a URL that suggests a 'get robux' hack, a common social engineering tactic. The document also contains numerous other embedded URLs, likely part of the same lure campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/431946152/get-robux-now-game-hack
    • http://dygmotors.com.py/images/coin-master-free-pet-food-links_GM406889139.pdf
    • http://dygmotors.com.py/images/free-robux-hack-no-human-verification_GM431946152.pdf
    • http://dygmotors.com.py/images/is-free-robux-real_GM431946152.pdf
    • http://dygmotors.com.py/images/free-roblox-items-codes_GM431946152.pdf
    • http://dygmotors.com.py/images/hack-client_GM479516143.pdf
    • http://dygmotors.com.py/images/roblox-robux-generator-2021_GM431946152.pdf
    • http://dygmotors.com.py/images/roblox-avatar-com_GM431946152.pdf
    • http://dygmotors.com.py/images/100-hack-coin-master_GM406889139.pdf
    • http://dygmotors.com.py/images/lazy-blocks-com-free-robux_GM431946152.pdf
    • http://dygmotors.com.py/images/free-robux-codes-generator-no-verification_GM431946152.pdf
    • http://dygmotors.com.py/images/coin-master-hack-extension_GM406889139.pdf
    • http://dygmotors.com.py/images/coin-master-free-spins-11-01-2021_GM406889139.pdf
    • http://dygmotors.com.py/images/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdf
    • http://dygmotors.com.py/images/ways-to-earn-robux_GM431946152.pdf
    • http://dygmotors.com.py/images/coin-master-free-card-link-today_GM406889139.pdf
    • http://dygmotors.com.py/images/roblox-shirt-template-free_GM431946152.pdf
    • http://dygmotors.com.py/images/free-robux-for-kids-no-verification_GM431946152.pdf
    • http://dygmotors.com.py/images/earn-free-robux-on-roblox_GM431946152.pdf
    • http://dygmotors.com.py/images/daily-free-spins-coin-master_GM406889139.pdf
    • http://dygmotors.com.py/images/real-robux-generator_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048d3.bin
114d399a15229be09b8bcbe48a78b335a4d09a3ae2da64e64163354535d49f0a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48D3 24400 bytes
font_01_sfnt_off0000809b.bin
77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x809B 2832 bytes
font_02_sfnt_off00008a4c.bin
9c3ce8d7b0d85fdff3917ffd210604c934acd68a905ece7635225fd3f48c16bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4C 18120 bytes

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