Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2902fd468dbaba…

MALICIOUS

PDF

188.0 KB Created: 2021-07-14 06:07:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5a685c7273eecd715fad7475eb4ebc2e SHA-1: 14b41d8ce0d6ac313b7f41e6bbdb5f85a849b64f SHA-256: af2902fd468dbabaad98521e795ccde4581319c9fa412b2462b1dbc61f5b7ad8
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URL that directs users to a suspicious domain, identified by ClamAV as a phishing trojan. The presence of this external link suggests an attempt to redirect the user to a malicious site, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3506

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://allytemp.ru/square?utm_term=based+off+meaning
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e92cd6fc46b150582878c0/1625894102947/2_months_baby_in_womb.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ecac5658d864752e050ad5/1626123350494/56814492426.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edeedd77fc8e778b5909ab/1626205917683/life_cycle_of_a_mosquito_for_kids.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_off00028053.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28053 16792 bytes
font_01_sfnt_off0002986a.bin
4bfbe1d281d1845dae4918a309d4bde297f8c3c6ed70c93237ab18ef21f723b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2986A 10504 bytes
font_02_sfnt_off0002b012.bin
9e05c67b6c9224582d69daf0b8a08678cea6e2b15e0e5e4fb811a7a580fc3d44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B012 19148 bytes

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