Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aef4d612ec29db7…

MALICIOUS

PDF

72.9 KB Created: 2021-07-13 18:55:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f39eb35f004a43167819749925e3bdf7 SHA-1: 06e9b529d350477750f0365d7881a59b7642a37a SHA-256: 6aef4d612ec29db77b61f447bea254b68df1e5110af69f9f5c7d823cfdaa8211
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature Pdf.Phishing.Trojan. The PDF contains an embedded URI pointing to an external website, which is a common tactic for phishing or credential harvesting. No scripts were extracted, but the presence of the malicious URL suggests an attempt to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier clean score 0.1651

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://irlanc.ru/square?utm_term=vantage+medical+group+claims+address
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e924f4e6bd1231e6080f11/1625892084470/11838804985.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ed6b552ae47d2ac92290cc/1626172245424/nupixiropuberafo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be7c.bin
f8ca7055190e0c65c84ea8e02c89d25f465baa0dc98ebd9e984739f0b2791408		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE7C 10928 bytes
font_01_sfnt_off0000d789.bin
648ead91577cf3cd52a7963fe6c24af446ef61d494a9fc624f1498856cd30f70		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD789 15300 bytes
font_02_sfnt_off0000fe53.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE53 16792 bytes

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