Malicious PDF — malware analysis report

Static analysis result for SHA-256 e57ccf06ac4c1062…

MALICIOUS

PDF

227.0 KB Created: 2021-07-06 18:05:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0aa8c6dca232ee3e9006ceb89d524dcd SHA-1: c8da7a3b1a4b9989ae061c9d771191c29be85b5e SHA-256: e57ccf06ac4c106225c17ae1164cf3e5e532910073fc535107edba3bc796e5d9
132 Risk Score

Malware Insights

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

The PDF document employs social engineering tactics, including a fake CAPTCHA and a browser extension installation lure, to trick the user into downloading a malicious file. The content, referencing 'Pokemon Go', is a common lure for such attacks. The embedded URL points to a suspicious domain, likely hosting the secondary payload.

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-or-armored-mewtwo-game-hack
    • https://perpus.upp.ac.id/digilib/repository/claim-gg-free-robux_GM431946152.pdf
    • https://perpus.upp.ac.id/digilib/repository/roblox-verification_GM431946152.pdf
    • https://perpus.upp.ac.id/digilib/repository/roblox-system_GM431946152.pdf
    • https://perpus.upp.ac.id/digilib/repository/mcpe-master-coins-hack_GM406889139.pdf
    • https://perpus.upp.ac.id/digilib/repository/meepcity-hacks-for-music-with-out-robux_GM431946152.pdf
    • https://perpus.upp.ac.id/digilib/repository/free-robux-2021_GM431946152.pdf
    • https://perpus.upp.ac.id/digilib/repository/free-robux-come_GM431946152.pdf
    • https://perpus.upp.ac.id/digilib/repository/pokemon-go-free-and-nintendo-switch_GM1094591345.pdf
    • https://perpus.upp.ac.id/digilib/repository/ways-to-get-robux_GM431946152.pdf
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-free-models-on-roblox_GM431946152.pdf
    • https://perpus.upp.ac.id/digilib/repository/chinese-free-roblox_GM431946152.pdf
    • https://perpus.upp.ac.id/digilib/repository/project-alpha20-hack-roblox_GM431946152.pdf
    • https://perpus.upp.ac.id/digilib/repository/minecraft-free-download-chromebook_GM479516143.pdf
    • https://perpus.upp.ac.id/digilib/repository/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • https://perpus.upp.ac.id/digilib/repository/how-do-you-hack-roblox-players_GM431946152.pdf
    • https://perpus.upp.ac.id/digilib/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdf
    • https://perpus.upp.ac.id/digilib/repository/how-you-get-free-robux_GM431946152.pdf
    • https://perpus.upp.ac.id/digilib/repository/cheat-bubble-gum-simulator-de-roblox_GM431946152.pdf
    • https://perpus.upp.ac.id/digilib/repository/apk-hack-coin-master_GM406889139.pdf
    • https://perpus.upp.ac.id/digilib/repository/como-hackear-personas-en-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off00031fc1.bin
361132bca17f580d3669929e6ad22190178b880eff9896e2ad35bc954ad778b9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31FC1 25576 bytes
font_01_sfnt_off00035bc9.bin
0efcdec91d5de35efe770f2cee32a95b8757c8332849162f42cd3b66d93e557f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35BC9 18800 bytes

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