Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7db58a6c7b40b0b…

MALICIOUS

PDF

226.8 KB Created: 2021-07-03 18:53:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f97433fc5932781fef9b026d3a8a57be SHA-1: 6a8afcb60ffd173362d9637155ed789726a63d95 SHA-256: b7db58a6c7b40b0b542c25ae635fa60cfb6e3629924795b0ee07f7fff415374c
132 Risk Score

Malware Insights

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

The document employs social engineering tactics, presenting a fake CAPTCHA and a browser extension installation lure to trick users into downloading potentially malicious content. The embedded URL, http://netcdn.tw/app/1094591345/is-pokemon-go-free-on-ipad-game-hack, likely serves as the initial download point for a secondary payload. While no scripts were directly extracted, the PDF structure and heuristics suggest a malicious workflow aimed at user deception for malware delivery.

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/is-pokemon-go-free-on-ipad-game-hack
    • http://perpustakaan.stikim.ac.id/slims/repository/redline-roblox-cheat-download-give-me-the-fucking-cheat-rn_GM431946152.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-free-cards_GM406889139.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-obc-cheat_GM431946152.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-hack-tips_GM406889139.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/uirbx-club-roblox-hack_GM431946152.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-roblox-100pasan-that-works_GM431946152.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-promo-codes-2021_GM431946152.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-hack-app-2021-download_GM406889139.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-hack-into-any-roblox-account-2021_GM431946152.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-hack-robux-infinitos_GM431946152.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/run-free-roblox_GM431946152.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-2021-no-human-verification_GM431946152.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/minecraft-mod-updater_GM479516143.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-earn_GM431946152.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-and-builders-club-generator_GM431946152.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-free-spin-generator-without-human-verification_GM406889139.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-com_GM431946152.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-hack-roblox-for-free-robux-2021_GM431946152.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-human-verification_GM431946152.pdf
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-free-robux-hack-pc_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off00031f73.bin
bc4651bc2047b9d58338a84527fa45546d94ea7ec0de9fc9ab101df8e503f8ec		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31F73 25576 bytes
font_01_sfnt_off00035b7b.bin
1cad2a70a067e44b7dc9cbc1ae6be810eb60baaf8aa793993d138fa51f3c8e02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35B7B 18708 bytes

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