Malicious PDF — malware analysis report

Static analysis result for SHA-256 28e12fecf5a8ec4a…

MALICIOUS

PDF

74.9 KB Created: 2021-07-18 05:36:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9df3f8a82155f1a60e188f1fefbebef9 SHA-1: e23b34f31de35f2c4904d38e75d4ba37bfcc5bb0 SHA-256: 28e12fecf5a8ec4a2fd6080fe2d08c346650efd51703c9ec2c25012eacb08f78
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs that likely lead to phishing or malware download sites. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect the user to external content, consistent with a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7703

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/X6hrLWyzjlw/square?utm_term=spanish+for+pear
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f14888c08012782f824b1e/1626425480617/20417990024.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60efda6298ba4d746116009a/1626331746671/mpa_steel_meaning.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f25907bb7e64222dee509c/1626495240013/miremerixobujovu.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_off0000c675.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC675 16792 bytes
font_01_sfnt_off0000de8c.bin
3dc298816580d91bd8f496b45a8eeb7b9e12b557e3cf5805d6143dd625a25b8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE8C 10384 bytes
font_02_sfnt_off0000f5eb.bin
30327a4a12bed3e13deae11f5003ec43bee2da006321b91c7d39528ea49a14e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5EB 16936 bytes

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