Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb5d8cc7ec6b3491…

MALICIOUS

PDF

79.6 KB Created: 2021-07-17 07:58:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 022af292c3083bfab90b6b6b9d9da5d1 SHA-1: 5f028548d302839c4b1d6310a3426e81f91a95f4 SHA-256: eb5d8cc7ec6b3491a583eeb36d5ac3d7956ebb4a87ef7966f7cea08cedca8470
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged 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 an attack. The obfuscated document body and the presence of external URIs suggest an attempt to deceive the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8374

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/W5vEtEh6t-A/square?utm_term=climate+resilient+agriculture+pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f1fe878cfcbd015c10c44d/1626472072047/14970971452.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec7eefc268f363b0864dc2/1626111727435/67908762491.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed66aeb8016c0d1ad61732/1626171054212/muxebow.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e85c836a4ec93e06c52cc6/1625840771188/positive_self_reflection.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ede7c83be50f2c5dae8b6c/1626204104902/34442800431.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_off0000d45b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD45B 16792 bytes
font_01_sfnt_off0000ec72.bin
87bae9529d97a81372fb9807457a962acd344d74efe9f21f1cee6c9330f719d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC72 10976 bytes
font_02_sfnt_off000105af.bin
35a3975c0355307916b9d7f6232811e772a356494fc86eb6761f4f19c1371a58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105AF 17056 bytes

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