Malicious PDF — malware analysis report

Static analysis result for SHA-256 48d7e8574b15a450…

MALICIOUS

PDF

251.2 KB Created: 2021-07-05 23:15:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d43afffa6e6c9acaac0742681a8f5afd SHA-1: efdaa69bc74d9eea8abe9828580c94cea86aaea0 SHA-256: 48d7e8574b15a4509d5c70d7b6ecd8eb89f385a033637600754ebe80d25f810f
140 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a phishing lure, specifically a fake CAPTCHA and an advance-fee scam related to game hacks. It contains a prominent URL pointing to a potential malware download or phishing site. The document's content and heuristics suggest an attempt to trick the user into clicking the link and potentially providing credentials or downloading a payload.

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/hack-for-pubg-uc-game-hack
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-avatar-items-in-roblox_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/60-free-spins-coin-master_GM406889139.pdf
    • https://fib.ub.ac.id/sac//repository/coin-master-hack-tool-for-pc_GM406889139.pdf
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-robux-in-2021-easy-no-hacking_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/free-roblox-hack-net_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/apocylopse-rising-roblox-hacks_GM431946152.pdf
    • https://fib.ub.ac.id/sac//repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdf
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-robux-fast-2021_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/roblox-hack-download-pc_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/roblox-i-have-free-wifi_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/free-codes-for-roblox-mineing-sim_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/minecraft-hacked-client_GM479516143.pdf
    • https://fib.ub.ac.id/sac/repository/www-free-robux-party_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/how-to-hack-roblox-accounts_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/hacking-scripts-for-roblox_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/rblx-gg-free-robux_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/real-working-coin-master-hack_GM406889139.pdf
    • https://fib.ub.ac.id/sac//repository/win-free-robux_GM431946152.pdf
    • https://fib.ub.ac.id/sac/repository/gg-robux-genorator-for-free_GM431946152.pdf
    • https://fib.ub.ac.id/sac//repository/robloxheroxyz-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_024_off00037ff4.bin
f1c68d958b1892833fd84c580aebb065faa5abc4a1dab304b7b1e078ffd0a4ee		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37FF4 25928 bytes
font_01_sfnt_off0003bcfc.bin
e71140ac15465b88842356d2c23e0d652828260ed27bb0df180be9a1b29b578c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3BCFC 18604 bytes

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