Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a24041b57d6cd3…

MALICIOUS

PDF

44.2 KB Created: 2021-06-09 07:46:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 77226196edb7476648f8ed1fa47bf327 SHA-1: da556d2622eb03d0d785d1eba8d8f3c7a8223a2e SHA-256: 80a24041b57d6cd337cb866640b070197d316db54ae9eabb86b66dcae0bdb228
90 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA lure, aiming to trick the user into interacting with a malicious link. The embedded URL and numerous other URLs point to sites offering game exploits, suggesting a phishing or scam campaign. No scripts were extracted, but the presence of a fake CAPTCHA and external links strongly indicates a user-interaction-based attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/how-to-hack-roblox-accounts-using-inspect-element-game-hack
    • http://dana1157.com/images/free-roblox-hair-boy_GM431946152.pdf
    • http://dana1157.com/images/free-spins-from-coin-master_GM406889139.pdf
    • http://dana1157.com/images/hack-coin-master-iphone_GM406889139.pdf
    • http://dana1157.com/images/free-robux-obby_GM431946152.pdf
    • http://dana1157.com/images/coin-master-free-coins_GM406889139.pdf
    • http://dana1157.com/images/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdf
    • http://dana1157.com/images/free-robux-roblox-promo-codes_GM431946152.pdf
    • http://dana1157.com/images/free-mods-for-minecraft-pe_GM479516143.pdf
    • http://dana1157.com/images/minecraft-windows-10-hack-client-2021_GM479516143.pdf
    • http://dana1157.com/images/how-to-get-free-robux-2021-easy_GM431946152.pdf
    • http://dana1157.com/images/free-spins-coin-master-blogspot_GM406889139.pdf
    • http://dana1157.com/images/free-robux-and-tix-no-human-verification_GM431946152.pdf
    • http://dana1157.com/images/minecraft-apk-free-download-016-0_GM479516143.pdf
    • http://dana1157.com/images/roblox-weird_GM431946152.pdf
    • http://dana1157.com/images/free-rpg-game-ad-roblox_GM431946152.pdf
    • http://dana1157.com/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdf
    • http://dana1157.com/images/how-to-get-verified-on-tiktok-for-free_GM835599320.pdf
    • http://dana1157.com/images/free-robux-no-human-verification-or-survey_GM431946152.pdf
    • http://dana1157.com/images/free-ways-to-get-robux_GM431946152.pdf
    • http://dana1157.com/images/minecraft-server-free-trial_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005005.bin
0dfe9a2a01a106334fc0e0e37c08b6ea471acc1e3776c0893ea64b8616b45ead		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5005 23828 bytes
font_01_sfnt_off00008634.bin
bcd8335247fe6434b9f5a81ac52fa95cc1de3a379ce95ee4095a486a9ce32667		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8634 19620 bytes

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