Malicious PDF — malware analysis report

Static analysis result for SHA-256 e00f63bafa54048a…

MALICIOUS

PDF

91.8 KB Created: 2021-07-20 14:47:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: eaee2ddbc465f37d4eef35b3417ff323 SHA-1: eaed24ccd54e473ddb44c571b22a88fe8f70f562 SHA-256: e00f63bafa54048a85f05eae999560563f5831fdb257d1b35f6c12add0cfdc30
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature. An external URI was found embedded within the PDF, suggesting a phishing or malware distribution attempt. While the document body is heavily obfuscated and unreadable, the presence of the embedded URL and the ClamAV signature strongly indicate a malicious intent to redirect the user to a potentially harmful site.

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/razvivatel/yapz/~3/UZrB20b2Dcg/square?utm_term=branches+of+which+tree+appear+on+the+un+flag
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e86e0436ee9e0d9b3c97ee/1625845252142/70172540549.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f080f36a22b22fd8a5de31/1626374387824/how_to_draw_isobars_at_4_mb_intervals.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_off00010007.bin
507706fb5190c84797ecce26384f23ad08d17d3a18a7acaa0aafbc30076c868d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10007 18204 bytes
font_01_sfnt_off00012fbf.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12FBF 16792 bytes
font_02_sfnt_off000147d6.bin
3efd6de6f9871d385728baad677a22e51ca89da703548cf19d9f2bb0fb67293c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x147D6 10996 bytes

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