Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ab937ca4a28f5f…

MALICIOUS

PDF

33.8 KB Created: 2021-06-18 05:41:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: dac352de462abd4ffe6c90a893818b81 SHA-1: 7ad23d38eb28c5011435b055da6425e265672999 SHA-256: 34ab937ca4a28f5f7f76f4bd84d85214e63a57e57bf13a205d97bae985305fe8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The document presents a fake CAPTCHA to trick users into interacting with malicious links, as indicated by the SE_FAKE_CAPTCHA heuristic. The embedded URL, http://netcdn.co/app/431946152/hack-somone-roblox-game-hack, likely serves as a download source for a second-stage payload. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/hack-somone-roblox-game-hack
    • http://pdapanache.com/images/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdf
    • http://pdapanache.com/images/roblox-hack-999999-robux-cheat-engine_GM431946152.pdf
    • http://pdapanache.com/images/how-to-hack-any-roblox-account_GM431946152.pdf
    • http://pdapanache.com/images/microsoft-bing-free-robux_GM431946152.pdf
    • http://pdapanache.com/images/coin-master-hacks-no-human-verification_GM406889139.pdf
    • http://pdapanache.com/images/roblox-hack-scripts-pastebin_GM431946152.pdf
    • http://pdapanache.com/images/websites-for-robux_GM431946152.pdf
    • http://pdapanache.com/images/roblox-jailbreak-hack-2021-download_GM431946152.pdf
    • http://pdapanache.com/images/free-robux-codes-generator_GM431946152.pdf
    • http://pdapanache.com/images/free-tiktok-followers-no-verification-or-survey_GM835599320.pdf
    • http://pdapanache.com/images/play-coin-master-online-free_GM406889139.pdf
    • http://pdapanache.com/images/free-robux-hack-us_GM431946152.pdf
    • http://pdapanache.com/images/javascript-free-robux_GM431946152.pdf
    • http://pdapanache.com/images/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdf
    • http://pdapanache.com/images/coin-master-hack-spins-apk_GM406889139.pdf
    • http://pdapanache.com/images/how-to-hack-roblox-high-school-2021_GM431946152.pdf
    • http://pdapanache.com/images/how-to-get-free-robux-2021-mac_GM431946152.pdf
    • http://pdapanache.com/images/how-to-get-free-roblox_GM431946152.pdf
    • http://pdapanache.com/images/free-robux-net_GM431946152.pdf
    • http://pdapanache.com/images/is-tiktok-free-on-iphone_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ea7.bin
177c67a2950fe04e159041c018779b5eb7c7ff8441970f61b095063edf730f35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA7 22212 bytes
font_01_sfnt_off00005ff5.bin
532eab471c448dd2d0d9827c7858c73a0811ba799ed62c955b5c27e83c76fc21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF5 18732 bytes

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