Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0e1e1c1fdce3292…

MALICIOUS

PDF

77.3 KB Created: 2021-07-16 03:19:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 24d7dab02fb44c6506b00480742c1a1a SHA-1: 645dc95205297d1a23f6289df93c134216ebe8de SHA-256: c0e1e1c1fdce32924ff2ab0a24f672643ca954fefae49d4c5b81b559592e62a3
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of embedded URIs suggests the document is designed to redirect users to external sites, likely for phishing or to download further malicious content. No scripts were extracted, but the PDF structure itself is suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7691

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/kVSxLQpkboc/square?utm_term=bmw+650+owners+manual
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec9b7544349d7bb06e8ddb/1626119030054/list_of_conjunctions_used_in_compound_sentences.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec7b52c217102653d546a5/1626110802294/79548252239.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8c65f09230f0e184245f8/1625867871454/the_battle_cats_story_of_legends.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_off0000c88c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC88C 16792 bytes
font_01_sfnt_off0000e0a3.bin
5d1e4b91d131b3cfc872ec9aa7a805a6a2fe8606f424d5ab8d960a585cc63a13		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A3 10744 bytes
font_02_sfnt_off0000f976.bin
493e3e99d828c4fae093a760b535744340c09569bc3815e2fa2d3ee2f6325c72		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF976 17892 bytes

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