Malicious PDF — malware analysis report

Static analysis result for SHA-256 04803fbc8f713a55…

MALICIOUS

PDF

250.9 KB Created: 2021-07-05 22:46:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c4453d87b785a5d5b0b33174bdbd218f SHA-1: d4557ce55b7b36b43d6ad7ed0e65b61a12375d0a SHA-256: 04803fbc8f713a55efc672672b79fff6e5e7af21a7b384b1b7c06c1b332f7be4
140 Risk Score

Malware Insights

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

The PDF document exhibits multiple lures consistent with phishing and advance-fee scams, including a fake CAPTCHA, an urgency lure, and a visual download button. The embedded URL points to a suspicious domain, likely serving as a landing page for credential harvesting or malware distribution. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest an attempt to trick the user into interacting with malicious content.

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-price-in-nepal-game-hack
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-date-and-time-hack_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/sandra-how-to-get-free-items-roblox_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-coin-master-coins-and-spins_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-hack-injection_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/cheat-code-for-roblox-jailbreak_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-daily-spins-and-coins-for-coin-master_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-free-spins-1701-20_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/roblox-free-clothes-hack_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/best-way-to-get-free-robux_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/ways-to-get-free-robux-2021_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-roblox-cards-pin-number_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/flame-gg-free-robux_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/roblox-free-clothes-generator_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-hack-app_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-download_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/how-to-hack-someones-minecraft-account_GM479516143.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-event-hack_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-paying_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_024_off00037ea3.bin
3ca7e3117a26dd44005c49dd57ec6bf5476bd46a2ca7d7d94e2b833440fa387a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37EA3 26180 bytes
font_01_sfnt_off0003bc17.bin
6bb1fc846c40ba3961d3a3a7d692f39d27a5de720c7427acbeda47f438b4375e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3BC17 18496 bytes

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