Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bf47323e2780dd6…

MALICIOUS

PDF

41.3 KB Created: 2021-05-22 02:13:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 696e4f7ed16952d7098880b578505144 SHA-1: 14f57041a8f79fab0a77e6abdfb81455af4f19eb SHA-256: 5bf47323e2780dd6498228b18aa557448dab3c3aa4fddf93b126dfbea7fa377d
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with a malicious link. The embedded URL and other linked URLs point to domains that host game-related lures, suggesting a phishing or scam attempt. The document's primary function appears to be directing users to external resources that likely host further malicious content or facilitate a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8053

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-spin-free-game-hack PDF link annotation
    • https://www.smartitbg.com/images/free-tiktok-likes-and-fans_GM835599320.pdfIn PDF document text
    • https://www.smartitbg.com/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.smartitbg.com/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.smartitbg.com/images/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.smartitbg.com/images/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003116.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3116 24464 bytes
SHA-256: 5ba2b4bee4fb115f66ac9fc03cee49bc524d77148cd5130de788b54f64dbca5c
font_01_sfnt_off00006956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6956 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off000076f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76F6 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off000080e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E5 17884 bytes
SHA-256: f64f8d8cd546afe107dcd88d9ce91258665e3d619825ef5ba403a2abc0c27184

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