Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3867156e4759a28…

MALICIOUS

PDF

87.5 KB Created: 2021-07-20 23:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 600a8b6ed77912f9460f65d06d04f025 SHA-1: f1641856a6ba2d7780da5006211d46fa5f498387 SHA-256: c3867156e4759a280385972f654fcee0a19809229ba6575e9f934be5886423cd
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a signature indicating it is a PDF phishing trojan. An embedded URI points to a URL that mimics a movie-related search result, suggesting a social engineering lure. While no scripts were directly extracted, the PDF structure and embedded URI indicate an attempt to redirect the user to a potentially malicious site, aligning with phishing or malware delivery tactics.

Machine Learning

  • Nyx PDF Classifier clean score 0.1542

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/-MXWpcYQ7kA/square?utm_term=film+percy+jackson+and+the+olympians
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f62a5253b2da2db762bded/1626745426727/62656421176.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f4d7b71ad9bf1c32c601d3/1626658743866/39219021056.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_off0000ec35.bin
077829081b9096948f73a25782645dbe79d5d1e51a4c1422b66adad2875cbb02		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC35 11092 bytes
font_01_sfnt_off000105d2.bin
c9f1908eea8e449612345aa593a298132422bbde6304893f136c05f0c47bcea3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105D2 20888 bytes
font_02_sfnt_off00013a63.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A63 16792 bytes

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