Malicious PDF — malware analysis report

Static analysis result for SHA-256 86c4fccc78678752…

MALICIOUS

PDF

72.3 KB Created: 2021-07-13 00:10:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9763620b58c2d44a504d38199e8a2354 SHA-1: 149c2041d30add1ae49a27cad633b077e9966d2e SHA-256: 86c4fccc78678752f633571d47b85299967e3ac5f412eaf5a0231068b684100f
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. The PDF contains an embedded URI that points to a URL, likely intended to redirect the user to a phishing site. Although the document body is heavily obfuscated and unreadable, the presence of the embedded URI and the ClamAV detection strongly suggest a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.1829

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://feedproxy.google.com/~r/razvivatel/yapz/~3/NsX9ihectO0/square?utm_term=wrongful+interference+with+a+contractual+relationship+example
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e90972aa30721e65ee197c/1625885042493/fill_out_papers.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_off0000bdd8.bin
c31f21f06f6a3d4d29b9b663e7128948965ab27d5dac70c923e3e6053e28bd5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDD8 11208 bytes
font_01_sfnt_off0000d7fd.bin
e4dbf279b30fe658a46b70a310ecabb4fa3a2f85b66f9bd0e21c379f20910830		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7FD 14740 bytes
font_02_sfnt_off0000fd0d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD0D 16792 bytes

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