Malicious PDF — malware analysis report

Static analysis result for SHA-256 192e267ba08f32cb…

MALICIOUS

PDF

75.6 KB Created: 2021-07-12 20:38:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dd52d8a570dc713cef0620dfa3409c3f SHA-1: be3a2e065588e236e269aa5a94ad7b8ed1912383 SHA-256: 192e267ba08f32cb276782061ca94d814282ccdbee7e096072e7ab24ab5df1e9
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ClamAV heuristic identified the file as 'Pdf.Phishing.Trojan'. The PDF document contains embedded URLs, one of which points to a Squarespace domain, and another to a Google feedproxy, both of which are flagged as benign. However, the presence of a phishing-related ClamAV signature and the general structure suggest a phishing attempt. No scripts were extracted, limiting the analysis of the execution flow.

Machine Learning

  • Nyx PDF Classifier clean score 0.1551

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/sq/ugae/~3/kVSxLQpkboc/square?utm_term=bergen+and+the+western+fjords
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e7f56797884458c9a2bc1a/1625814375308/53944735415.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_off0000c62b.bin
da07bbbc0ab5c631ae6a8048c5312786345dd3141ad7d81bc981b8be788fcbdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC62B 16988 bytes
font_01_sfnt_off0000f228.bin
1dddd04ac9ac0e400808cb66e4e2358e4bb00e586a6545b3b17f47d00acb9426		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF228 10764 bytes
font_02_sfnt_off00010ac8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC8 16792 bytes

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