Malicious PDF — malware analysis report

Static analysis result for SHA-256 93f436ebb3d24121…

MALICIOUS

PDF

76.5 KB Created: 2021-07-14 10:11:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4d8c68121325e43060abb0f30046f7ee SHA-1: b7f7c01ccf6af23d84d9538d051f449e9ce0a296 SHA-256: 93f436ebb3d24121fc3ebbe58b9468d4d300b635e8f6e58d1dcf27f23b700a05
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 embedded URLs that point to external websites, suggesting an attempt to redirect the user to malicious content. While no scripts were explicitly extracted, the presence of external URIs and the ClamAV detection strongly indicate a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

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/IdU8rIDf9lQ/square?utm_term=how+much+oil+for+wax+melts
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec882ea1f8f93f64ac3f8c/1626114094181/daren.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_off0000ca4d.bin
7b1aca2747023bccdda398b90a39e53311e12aecaa9d3b3568ac3786a522c4f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA4D 16716 bytes
font_01_sfnt_off0000f5a7.bin
83c41c07e2479e0924d449c0da125082daf1af97c10796a5a594658f9aedd7e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A7 10776 bytes
font_02_sfnt_off00010e86.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E86 16792 bytes

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