Malicious PDF — malware analysis report

Static analysis result for SHA-256 44246076cc7b461f…

MALICIOUS

PDF

79.4 KB Created: 2021-07-12 22:14:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 06a66341bf0f3a774b8eb52b55c10db7 SHA-1: de6a4592ed4aac33009643be34aaf9c2c9428416 SHA-256: 44246076cc7b461fc9e4d8e3818dbcd600d9dfde5e34bbcc578e5ccc9deffe3b
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a phishing-related signature. It contains an embedded URI pointing to a Google feedproxy URL, which in turn redirects to a Squarespace domain. While the URLs themselves are marked as benign, the presence of the ClamAV signature and the PDF_URI heuristic suggests a phishing attempt. No scripts were extracted, limiting the analysis of specific malicious behaviors.

Machine Learning

  • Nyx PDF Classifier clean score 0.1467

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=the+merchant+of+mayberry
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e914caaa30721e65eea385/1625887946249/product_manual_download.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8da7def1ca41d5f9ca85/1626115495492/hate_quotes_in_english_about_love.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_off0000d601.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD601 16792 bytes
font_01_sfnt_off0000ee13.bin
79badb38ebe25e9691a07398308ebe74d4887f8ac6ec50e60852239cab11accf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE13 16920 bytes
font_02_sfnt_off00011a5b.bin
142bb03451a4778930c89d5613dc8bcc7e244e2f1a283c2df9d6586ed95498e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A5B 10512 bytes

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