Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddbbfc55742e3b5c…

MALICIOUS

PDF

227.6 KB Created: 2021-07-05 21:54:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 99936ad0ee45c6c57e48be2fd2939063 SHA-1: d7248bb59e0a418d28be332b18494b0751e87e1f SHA-256: ddbbfc55742e3b5c72db0c76fc592fec9f2398d8349ac128cc36bc4cb29265e7
132 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 deceive users into downloading a potentially malicious file. The embedded URL points to a lure for a 'Pokemon Go hack', suggesting a phishing or malware distribution attempt. No scripts were extracted, but the presence of external URLs and the nature of the lures strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0118

Heuristics 6

  • 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
  • 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-8-generation-game-hack
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/free-roblox-girl-clothes_GM431946152.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/free-robux-roblox-promo-codes_GM431946152.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/free-spins_GM406889139.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/how-to-hack-coin-master-using-es-filer_GM406889139.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/roblox-hacker-c00lkidd_GM431946152.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/roblox-rewards_GM431946152.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/how-to-get-free-robux-on-mac-2021_GM431946152.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/minecraft-free-download-mac-full-version-2021_GM479516143.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/get-minecraft-windows-10-free_GM479516143.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/coin-master-free-link-daily_GM406889139.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/spins-coin-master_GM406889139.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/coin-master-hack-app-2021_GM406889139.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/free-robux-human-verification_GM431946152.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/robux-boost_GM431946152.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/free-gifts-coin-master_GM406889139.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id//repository/hacking-apps-for-roblox_GM431946152.pdf
    • http://perpus.sdmuhwirobrajan3.sch.id/repository/free-spins-coin-master-links-thursday-november-28-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off00032229.bin
6d349c474d231132def7861c43f3c442b545cfbc24fc66043ea6d45527b8d947		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32229 25576 bytes
font_01_sfnt_off00035e31.bin
e3a26b47b946cf8ca2b62a5d9e578c331e4c6722823501156c8e22880284dfbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35E31 18792 bytes

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