Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba0324934a886520…

MALICIOUS

PDF

81.2 KB Created: 2021-07-16 03:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a0efa8a55975229bdbe7e4341a28a4ea SHA-1: 76bf6c7ce74bceb66be3b5a200089336a3bef8e5 SHA-256: ba0324934a886520994a25e994abe0fd74673a86cb194f5b99e550ad8d306e93
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs, one of which is directly visible in the document body, suggesting a phishing or social engineering lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6221

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/UZrB20b2Dcg/square?utm_term=how+to+connect+with+my+spirit
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8e9763b7e7c63344d4473/1625876854778/lenze_8200_smd_manual.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee1e13115d504d3a83dca6/1626218003299/32426513072.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e94b16566ded7d61adee73/1625901847109/nedusazuravepamel.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_off0000de5f.bin
4416ebd4b23997ef994405657c03ceea5784ce2bd1f78b2cfcc9c9b60a537bbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5F 10624 bytes
font_01_sfnt_off0000f67f.bin
c3b953f3bdc0855e3eb0971be8bf31d6258c18832c1b69a759b2f0ef0fb8ca2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF67F 16528 bytes
font_02_sfnt_off00012155.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12155 16792 bytes

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