Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a89bbc89aa6b9c…

MALICIOUS

PDF

227.5 KB Created: 2021-07-07 05:36:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ae49c5ed73728545336a867a055132c8 SHA-1: be8e57660737b955e69ab169d3f0294294d56504 SHA-256: 06a89bbc89aa6b9c5a9905f22e53da06b033cb4dd598cfc7cd20c0e47c95bf12
152 Risk Score

Malware Insights

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

The PDF document employs social engineering tactics, including a fake CAPTCHA and a browser extension installation lure, to trick users into downloading potentially malicious content. The presence of a fake CAPTCHA and a browser update lure strongly suggests an attempt to trick the user into executing further malicious steps. The document also contains an external URI pointing to a suspicious domain, likely related to the lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0118

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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/1094591345/pokemon-go-free-qr-code-game-hack
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-to-earn-free-robux-2021_GM431946152.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/get-free-roblox_GM431946152.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/100-free-spins-for-coin-master_GM406889139.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-to-hack-someones-minecraft-account_GM479516143.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-minecraft-server-maker_GM479516143.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/roblox-robux-hack-cheat-engine-64_GM431946152.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/roblox-girl-free_GM431946152.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/toolbox-apk_GM479516143.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/roblox-builders-club-hack-2021_GM431946152.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-hack-app-android-download_GM406889139.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-hack-spin-generator_GM406889139.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-daily-bonus_GM406889139.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/roblox-sexually-abused_GM431946152.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/roblox-hackprogamers-com_GM431946152.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-do-u-get-robux_GM431946152.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-apk-hack-35-8_GM406889139.pdf
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/gamehunters-coin-master_GM406889139.pdf
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/robux-pin-codes-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off00032223.bin
0db359ab4c9272f773e6ed2f3afb94bb755ba8a979ee87603db866de3cf199e2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32223 25576 bytes
font_01_sfnt_off00035e25.bin
988dd5626a7ddcc6e9b57b903ae32c0f531ab72545b639be002704101c0ff96a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35E25 18692 bytes

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