Malicious PDF — malware analysis report

Static analysis result for SHA-256 a97a59bb1e53b972…

MALICIOUS

PDF

75.5 KB Created: 2021-07-17 14:35:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6eddc812e64145062aa2889b2782f030 SHA-1: 0966cedb0888241f2dd213c8dc43284512475751 SHA-256: a97a59bb1e53b972cd779076ff0e04ed4e5017e117135b73c70c198f944544fb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains embedded URLs, one of which is flagged as potentially malicious, suggesting a phishing or credential harvesting attempt. The PDF structure and embedded content indicate it's designed to deceive the user into clicking on a link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8907

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/AG-UZpNbJGc/square?utm_term=miriam+in+the+bible
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee64f6588fb5669517035c/1626236150783/tractor_ploughing_manual.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eda777c8cbd011b90cca21/1626187639467/slate_is_clean_meaning.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f13c4b93f2b300380efd3e/1626422347147/area_of_a_circle_in_a_square.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee88019b1e4d6a36114272/1626245122020/pebapi.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec77bc700aa07a78939721/1626109884900/14600586425.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e940b75ebba154a8fd5212/1625899191650/gibotonaji.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_off0000ca01.bin
74ff5f037d77f6062d11e8e0ae7aaa60dc8583e296525839afd045c424f10cd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA01 16184 bytes
font_01_sfnt_off0000f380.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF380 16792 bytes
font_02_sfnt_off00010b97.bin
fb0765119eca0a68f20496d9110e8c9159c12bf3b34acc3912ebd7c9ceb25fb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B97 10216 bytes

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