Malicious PDF — malware analysis report

Static analysis result for SHA-256 e93224ec259f410b…

MALICIOUS

PDF

227.1 KB Created: 2021-07-04 22:14:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 725325236a4e4bce40d3f9924ca77559 SHA-1: 8c477acae70e7179bef8929cd34fc7375e0befd4 SHA-256: e93224ec259f410b9b7f2094d1e0c4bc637099e0fb48bf6adee063a8e66d0499
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document employs social engineering tactics, presenting a fake CAPTCHA and a call-to-action to trick users into installing a browser extension or plugin. It also contains an embedded URL that likely serves as a download source for a malicious payload. The document body and heuristics strongly suggest a lure for installing unwanted software or compromising the user's browser.

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-yamask-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/free-robux-avatar-with-private-group_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-make-a-costume-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/comment-maitre-de-dinosaure-dans-free-dino-tycoon-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-weird_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/one-punch-man-unleashed-roblox-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/rewards-roblox-com_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-chemises-furious-jumpe_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-gift-card-codes-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/telecharger-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-a-free-pet-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-tool-robux-and-tickets-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off00032168.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32168 25576 bytes
SHA-256: b71f807bafcab851af205a02fa64a82bf1a8efee7b5896b4152036068c2c412f
font_01_sfnt_off00035d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35D6E 18520 bytes
SHA-256: 6d367c464e96a0e6d5bba02395808a26221e6c9ae4a3e065b5ef1c1ce0b48eb4

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