Malicious PDF — malware analysis report

Static analysis result for SHA-256 af5e7760192eb10f…

MALICIOUS

PDF

251.3 KB Created: 2021-07-06 16:18:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c4356a0a1a38102ecd12f5366ad1865e SHA-1: 4dd3a2ed43568fc463edc1c3a4136ef63540063c SHA-256: af5e7760192eb10fba31597956954126256e3b235ba66a8d5c6c92b9e0c6c95b
140 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a phishing or scam lure, including a fake CAPTCHA, urgency language, and an advance-fee scam pretext. It contains an embedded URL pointing to a suspicious domain, likely intended to lead the user to a malicious site for credential harvesting or malware download. The document body, though partially corrupted, contains references to 'Pubg Uc Free Hack' and the URL, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0099

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-free-hack-game-hack
    • http://library.itekes-bali.ac.id/repository/https-wwwrobloxcosims-4-cheats_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/cheats-for-roblox-high-school_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-free-drift-track-model_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-spin-and-coin_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-groups-that-give-you-free-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/robux-apk_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/chad-the-beast-and-audrey-the-hacker-in-roblox_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-hacks-download-2021-with-virustotal_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-easy_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-hack-menu-ios_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-t-oget-ant-free-robux-item_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/blueberry-hack-roblox_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-ios-download-2021_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/get-free-hair-in-roblox_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/minecraft-free-minecoins_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/minecraft-switch-free_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-daily-2021_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/free-sword-pack-roblox_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-coin-master-spins_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-no-download-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_024_off00038028.bin
a91074064236c8ddd3f06ae625ce2d9c70a8ef223c2c1ac90dbcb0569e31a098		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x38028 26216 bytes
font_01_sfnt_off0003bda8.bin
9fd58b0400486ccae59dbfc9ebd089036a8909cb72c39339595926b4d13c159d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3BDA8 18460 bytes

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