Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e51686359d0f90d…

MALICIOUS

PDF

72.0 KB Created: 2021-07-16 04:11:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b990fb77ada1a82e0662a3337ec7cbd2 SHA-1: 5b19d127b1cedd956f9e8e372446a93ec955ec99 SHA-256: 4e51686359d0f90d064d83e1261655fb519f951db8c48710c0d4d8cf7437d2e6
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 PDF phishing trojan. The document's content, though heavily obfuscated in the provided excerpt, is presented as a PDF conversion tool, likely a lure to encourage interaction. The presence of embedded URLs, even those marked as benign, suggests an attempt to redirect the user to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier clean score 0.1797

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/UkUWPC8UKDU/square?utm_term=pdf+to+excel+word
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8fa43085b1c120f963ec4/1625881155287/zodavake.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8f0b7b132fa362071063d/1625878711891/pain_in_calf_down_to_foot.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_off0000bf14.bin
a4f3101476d84a311ff74d76f633cd43f13e8f04a6ad72fa68f98cb26a042089		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF14 10132 bytes
font_01_sfnt_off0000d5ea.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5EA 16792 bytes
font_02_sfnt_off0000edfc.bin
11c2b4b6b4a08b353e6e1c3bca1de748b922a2e44967b9d231bcbc894d542c82		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFC 15420 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.