Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1e8c2aeb7554e9a…

MALICIOUS

PDF

46.1 KB Created: 2021-05-15 10:00:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 8abc9096b296a8020c1f618f9a133065 SHA-1: 8ab63d1933795584655896837c0eaced64df5c97 SHA-256: e1e8c2aeb7554e9aa835488bcb7e32bd73c0c7e2f2b9c01f28c0acda1f339e75
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure and embedded URLs, suggesting an attempt to trick the user into clicking a link for malicious purposes, likely to download a second-stage payload or redirect to a scam. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the presence of embedded URLs and the fake CAPTCHA heuristic strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 4

  • 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
  • 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/how-to-get-free-roblox-items-game-hack PDF link annotation
    • http://jdleducation.com/images/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://jdleducation.com/images/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://jdleducation.com/images/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://jdleducation.com/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
    • http://jdleducation.com/images/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://jdleducation.com/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://jdleducation.com/images/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a21.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A21 26804 bytes
SHA-256: 9fb7fa49c9578da6c4ff82c0e7826503aab468a38be30554288a578c3dc027ae
font_01_sfnt_off0000874e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x874E 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off0000910f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x910F 18476 bytes
SHA-256: 8f186cfffdac824b8af051e9c3258ff2c6bc2a624daaf9438b2e2390608ff8bc

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