Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ee9eb91c4146745…

MALICIOUS

PDF

41.4 KB Created: 2021-05-15 17:45:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3f9e4cf6ae5dcd23c0ba2d24f1b6d026 SHA-1: 2684ab4f13942e34366b5cfb4404e8cfa1893653 SHA-256: 3ee9eb91c4146745c1b348acb5ca22d76e8eb401df5e1941dc57a7f73ca679d7
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game cheats and account hacking, directing users to external URLs. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs and callback lures suggests a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate it likely serves as a dropper or a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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-heaven-free-spins-link-2021-game-hack
    • http://cosver.eu/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://cosver.eu/images/coin-master-spin-hack-trick_GM406889139.pdf
    • http://cosver.eu/images/minecraft-free-exe_GM479516143.pdf
    • http://cosver.eu/images/get-free-spins-coin-master_GM406889139.pdf
    • http://cosver.eu/images/coin-master-cards_GM406889139.pdf
    • http://cosver.eu/images/coin-master-free-account_GM406889139.pdf
    • http://cosver.eu/images/coin-master-free-spins-23-march-2021_GM406889139.pdf
    • http://cosver.eu/images/coin-master-100-free-spins-link_GM406889139.pdf
    • http://cosver.eu/images/coin-master-fan-page-free-spins_GM406889139.pdf
    • http://cosver.eu/images/haktuts-coin-master-free-spins-2021_GM406889139.pdf
    • http://cosver.eu/images/minecraft-bedrock-edition-hacks_GM479516143.pdf
    • http://cosver.eu/images/coin-master-free-spin-game_GM406889139.pdf
    • http://cosver.eu/images/minecraft-for-ps3-free_GM479516143.pdf
    • http://cosver.eu/images/free-coin-master-spin-app_GM406889139.pdf
    • http://cosver.eu/images/free-robux-games-that-actually-work_GM431946152.pdf
    • http://cosver.eu/images/free-minecraft-alt-generator_GM479516143.pdf
    • http://cosver.eu/images/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://cosver.eu/images/free-robux-co_GM431946152.pdf
    • http://cosver.eu/images/how-to-get-free-robux-without-offers_GM431946152.pdf
    • http://cosver.eu/images/daily-free-spins-and-coins-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004795.bin
70ccd04c22d3a40ee61d796e7e39bb3059598fd2acfb2018fb36f6d4d209d898		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4795 24440 bytes
font_01_sfnt_off00007e72.bin
9953a6bcf7299cdc3f53a486839c0d2d9be693cd5b14fd285ca1faa973488d1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E72 18572 bytes

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