Malicious PDF — malware analysis report

Static analysis result for SHA-256 84eb6d2679a71259…

MALICIOUS

PDF

226.4 KB Created: 2021-07-06 05:08:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: db45feeb46ff9b5c720334ee23b385c9 SHA-1: aa999059d4c39c7a6f10652796f85b2ab3679214 SHA-256: 84eb6d2679a71259901b49128540e7dd2c0620cfe47ff28a5aa71dd7bdd76aa0
132 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it presents a fake CAPTCHA and a browser extension installation lure, aiming to trick the user into downloading malicious content. The document body and extracted URLs, such as 'http://netcdn.tw/app/1094591345/pokemon-go-free-spoofing-game-hack', reinforce this social engineering tactic. The primary goal appears to be tricking the user into executing a malicious file or visiting a compromised site under the guise of obtaining game cheats or software updates.

Machine Learning

  • Nyx PDF Classifier clean score 0.0117

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-spoofing-game-hack
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/free-robux-only-1-step_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/roblox-t-shirt-free_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/minecraft-mod-updater_GM479516143.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/coin-master-links-that-don-t-expire_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/how-to-get-free-robux-website_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/robux-hack-pw_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/minecraft-java-edition-download-free_GM479516143.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/roblox-hack-gui-script-pastebin_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/roblox-infinite-jump-hack-2021_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/free-spins-coin-master-2021_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/minecraft-tower-defense-hacked_GM479516143.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/free-spin-coin-master-link-2021_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/pokemon-go-free-xp_GM1094591345.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/free-robux-fun_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/how-to-get-free-robux-and-obc-2021_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/coin-master-free-spins-a2z-help_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/coin-master-free-attack-link_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/minecraft-java-account-free_GM479516143.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/free-roblox-followers-generator_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/how-to-free-robux-on-ipad_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off00031e2c.bin
c3100247ee31fbfb018ff90163bd8f1bf27b57f9538a8f7160b5eccd35c12995		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31E2C 25576 bytes
font_01_sfnt_off00035a29.bin
dc359485d52a954f2a8b2b7cc7626ed276cf70412c39dcab9fcb0c0fc6259f93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35A29 18656 bytes

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