Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc16d1de4c443184…

MALICIOUS

PDF

77.5 KB Created: 2021-07-13 21:27:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d3484394ea23d245500311f9d8b7ed2c SHA-1: 31568c69014853534b21eea1bb9b75908e4f055f SHA-256: fc16d1de4c443184bb75656ed976911549c3997581a91410e585058275b86868
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The ClamAV heuristic identified this PDF as a phishing trojan. While most extracted URLs are benign, the presence of an external URI and the ClamAV detection strongly suggest malicious intent. The file's structure and embedded artifacts do not provide further insight into its specific functionality beyond being a malicious document.

Machine Learning

  • Nyx PDF Classifier clean score 0.2210

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/AG-UZpNbJGc/square?utm_term=blessings+from+god+to+us+all
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eca45380388a1034da2829/1626121299746/44177810447.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed8e196be96a4ec40bef4d/1626181145525/endorse_meaning_in_tamil.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_off0000ce08.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE08 16792 bytes
font_01_sfnt_off0000e61a.bin
3b3ffa0eb73fbfafc73590440271c6a6b77a4304eeae0dd6ba2660723733af5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE61A 16740 bytes
font_02_sfnt_off000111a5.bin
bedec084de14596736fc2d30a544d4b48b163db826e13adc10360e43b80ba996		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111A5 10848 bytes

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