Malicious PDF — malware analysis report

Static analysis result for SHA-256 24e51a951ac6ab37…

MALICIOUS

PDF

44.2 KB Created: 2021-06-02 15:04:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2a1faac44089751a083a128ba6f44665 SHA-1: cce23c96776b7fa06913c9be4dd33bd005e7432a SHA-256: 24e51a951ac6ab376b470ab1e1d501c7e75f5ba970b1e2ed472b21f49cbd9b99
90 Risk Score

Malware Insights

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

The document contains a fake CAPTCHA lure, designed to trick the user into interacting with the document and potentially downloading a payload. Multiple external URLs are embedded, with one prominent URL pointing to a 'speed hack code for roblox game hack'. The ML classifier also flagged this PDF as malicious with high confidence. The presence of these elements suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 https://netcdn.xyz/app/431946152/speed-hack-code-for-roblox-game-hack PDF link annotation
    • http://geometraperiotto.it/images/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://geometraperiotto.it/images/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/pokemon-go-free-vs-pro_GM1094591345.pdfIn PDF document text
    • http://geometraperiotto.it/images/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/roblox-points_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D85 26540 bytes
SHA-256: e4361cf72624c5c1e9aad26c629aa25e1cf2d9120f38da31c7f3eb511afbbc72
font_01_sfnt_off000088db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88DB 18696 bytes
SHA-256: 90a1e0e9c93e66137b30ffee1a516efcdb5fe3931eb0658f60a65b2d88d1ca31

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