Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd6d80ac61b691a9…

MALICIOUS

PDF

124.8 KB Created: 2021-07-15 08:50:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cb52379111d561a00f70bf24e9e33be5 SHA-1: 4dd1e1ced59c58df27fc4ed2e08d26b1194b5df2 SHA-256: bd6d80ac61b691a9ee4bbe5f98e12110550b82ba1042d38948cf511d960950b6
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a phishing and trojan detection. The document body contains urgency lures, such as 'account will be terminated' and 'action required within 24 hours', suggesting a phishing attempt. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate potential for malicious content execution, likely through embedded JavaScript.

Machine Learning

  • Nyx PDF Classifier clean score 0.0134

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=star+plus+channel+anupama+serial
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e94337566ded7d61adbfa8/1625899831226/12291108956.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edbc895328c9309dd78e3d/1626193033673/formative_assessment_in_early_years.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0001c354.bin
2361628b1458689a5cc0f40a7f6da16726207fc6801a2bc2f8d4621df955d9a3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1C354 17020 bytes
font_00_sfnt_off000162ba.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x162BA 16792 bytes
font_01_sfnt_off00017acc.bin
c68348fe52195ad5d11a02787878b827c746cc42398b98218581f5a89a884a5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17ACC 18688 bytes
font_02_sfnt_off0001ab09.bin
223215172c34af8d496ae73975ae6f867b4240833d5c349240b7bb99dfb8bdba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AB09 10696 bytes
font_04_sfnt_off0001dc60.bin
f8271ae6d6cb7830958038f97bd0934f1e35bf4a74d766daaa0cef7c875f0274		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1DC60 2216 bytes

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