Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2cba6818793cc47…

MALICIOUS

PDF

72.2 KB Created: 2021-07-13 00:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fa39c7847822ed5feae73f5f0ede476e SHA-1: 14acd7dd912db28d299c0cbb3e631e1b3a6d95fe SHA-256: f2cba6818793cc4792cbf21fce87665f5263c2ff1dcd6d7f78a498e112f1a9b4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF with a high risk score and ClamAV detection indicating it is a phishing trojan. It contains an embedded URL that is likely part of a phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6583

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/~3/5VO7y1TeAqQ/square?utm_term=huber%27s+orchard+and+winery
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ecb3204d4a7853b71587ba/1626125088481/50711087587.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e9090337cb9044755f096d/1625884931944/gafapuwijenof.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ecb294a506f377f536cfe3/1626124948757/i_am_looking_forward_to_speaking_to_you.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_off0000b8ce.bin
c818d1e64037eda5aeabc20e611b642eb2d23050ed5218e1993b2fea6f149f59		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8CE 16668 bytes
font_01_sfnt_off0000e489.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE489 16792 bytes
font_02_sfnt_off0000fca0.bin
da72872c2100fc3923f783a126450b6108537dee9925c43b751b5a6622f1af6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA0 10788 bytes

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