Malicious PDF — malware analysis report

Static analysis result for SHA-256 89e5f092afd5887d…

MALICIOUS

PDF

91.0 KB Created: 2021-07-15 20:22:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cd3a4a9adec3b29d1e535ed5bd42df3b SHA-1: 1f5983d71f4e851f1da77c161ca3bdad4e3cf6bb SHA-256: 89e5f092afd5887d85cc20dc1be350fdf2b507a78f393b3224f3fe293d27b9f5
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains embedded URLs that likely lead to malicious content or further stages of infection. The presence of PDF_URI and EMBEDDED_URL heuristics suggests the document is designed to redirect users to external sites, a common tactic in phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6359

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/-MXWpcYQ7kA/square?utm_term=middle+earth+strategy+battle+game+battle+companies+pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee603fe03b615e0990499e/1626234943109/lack_of_need.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec784b4027437375955575/1626110027336/will_banks_raise_interest_rates.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec8fe60f7d8d50062cc712/1626116070713/5162300245.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_off0000fea8.bin
7f8ac36657a1063d4ad94a1e7916571d34fd870d1c970d522f35078fc332964c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA8 11312 bytes
font_01_sfnt_off000118a2.bin
c5c7fff85f82a26c2de4765ed3d537e8fee019733dcbbcee51f3c2c11f91199f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x118A2 17744 bytes
font_02_sfnt_off000145f2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x145F2 16792 bytes

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