Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb7e1e48e16224f0…

MALICIOUS

PDF

41.4 KB Created: 2021-05-15 00:27:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 642e344822701b3672f3a00ae66f7b38 SHA-1: c5f2be312b57276f8cebb6c838a42d8cc07d56de SHA-256: eb7e1e48e16224f017a404b7e0affa142b6dc31e68585bfb9b3e0e97971b6071
82 Risk Score

Malware Insights

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

This PDF document was flagged by an ML classifier as malicious. It contains a fake CAPTCHA lure, designed to trick users into performing an action that likely leads to downloading a second-stage payload from one of the embedded URLs. The document body and embedded URLs suggest a theme of game hacking or cheating, common in phishing and malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-stop-attack-hack-game-hack PDF link annotation
    • http://brokermortgages.com/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/spins-coin-master_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/minecraft-app-store-free_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
stream_003_off0000488e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x488E 24576 bytes
SHA-256: 4f67d6a8f0d9a407018dba0589a042245149a11ae7d9f291bcce3ad50c45a08d
font_01_sfnt_off000080af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80AF 17892 bytes
SHA-256: 39a576627da682e915740756597514a1a33942882bdfaf8ae0370b937314ba67

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