Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eecd125d3239fd6…

MALICIOUS

PDF

77.4 KB Created: 2021-07-20 07:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9ca77c499dd22f12dd2c302c5b28abfa SHA-1: 94c62c4b0d23a841fca6df572b4e8979933df45a SHA-256: 0eecd125d3239fd6ecca1b6f51006a0630efb8967cad41ba22d394413a531952
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 phishing trojan. The PDF contains embedded URLs, one of which is flagged as suspicious, suggesting a phishing attempt. Although no scripts were directly extracted, the presence of embedded URLs and the ClamAV detection strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier clean score 0.2489

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/razvivatel/yapz/~3/1LSSs5qy-i4/square?utm_term=how+to+make+milk+from+heavy+cream
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec870b40121f56689a55d6/1626113803393/nunodew.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f05e5f05f87640ba7e33e2/1626365535952/civil_peace_question_and_answer.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_off0000cdf5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF5 16792 bytes
font_01_sfnt_off0000e607.bin
9e388985b1a90108ba9dd7a84be11b502e1fc3ab75baf1fe659c6fcca533f2ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE607 16860 bytes
font_02_sfnt_off00011175.bin
e41b6cdd5535ec45f6c869d68e63f18d3c25c5d9b9048384ae0f97b5f4927783		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11175 10680 bytes

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