Malicious PDF — malware analysis report

Static analysis result for SHA-256 14cdecc219472576…

MALICIOUS

PDF

250.8 KB Created: 2021-07-09 05:47:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fa4533f1849c5802503958c7f080959b SHA-1: 6a0e753dc0d26c88299f28a2a8830c9b35688ee8 SHA-256: 14cdecc219472576eb64d2265bc1ceb81dee6ff10a26b6dca1d4b44fd2dbd8e8
140 Risk Score

Malware Insights

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

The PDF document contains a lure for an advance-fee scam, specifically a 'PUBG UC Generator', and displays a fake CAPTCHA to trick users into clicking a malicious link. The document also includes MFA/one-time-code harvesting lures, suggesting an attempt to steal credentials or abuse authentication processes. The primary IOC is the URL embedded within the document, which likely leads to a second-stage payload or phishing page.

Machine Learning

  • Nyx PDF Classifier clean score 0.0098

Heuristics 7

  • 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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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 http://netcdn.tw/app/1330123889/pubg-uc-generator-no-verification-game-hack
    • http://e-library.akbid-purworejo.ac.id/repository/coin-master-time-speed-hack_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/free-roblox-hided-head_GM431946152.pdf
    • http://e-library.akbid-purworejo.ac.id//repository/minecraft-bedrock-free-with-java_GM479516143.pdf
    • http://e-library.akbid-purworejo.ac.id//repository/how-do-you-get-minecraft-for-free_GM479516143.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/boku-no-roblox-hack_GM431946152.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/free-20-robux_GM431946152.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/roblox-free-simulator_GM431946152.pdf
    • http://e-library.akbid-purworejo.ac.id//repository/minecraft-server-free-trial_GM479516143.pdf
    • http://e-library.akbid-purworejo.ac.id//repository/hack-xp-net-generators-coin-master_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id//repository/roblox-promo-code-to-get-free-robux_GM431946152.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/coin-master-hack-version-download-2021_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/free-100-robux-code_GM431946152.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/free-coin-master-hacks-no-verification_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/gaming-dunia-coin-master-free-spins_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/coin-master-daily-free-spins-link-haktuts_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id//repository/coin-master-free-spins-link-2021-blogger_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id//repository/free-minecraft-coloring-pages_GM479516143.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/free-robux-no-anti-bot-verification_GM431946152.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/free-code-roblox-card-with-no-risk_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_024_off00037d85.bin
a76a479b7d1ee6230df3a81a4bb9c44c734a71a45df95431e69b738de4894a3c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37D85 26144 bytes
font_01_sfnt_off0003bb2b.bin
0b7a8d530fda9069e73bfc1a75acaf65c6c541ca0f672e4f30a10d099473ca4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3BB2B 18624 bytes

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