Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6d15e0bcce0c576…

MALICIOUS

PDF

72.8 KB Created: 2021-07-14 05:39:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d9fedd27106d59ff8af0f6e03aa083ee SHA-1: 36f73d22fdbf338f1530f107364e2bebc37351c0 SHA-256: e6d15e0bcce0c576e0f5f5e9ee830d173698135c6d1d7bc08d118be8c5c7a571
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a signature indicating phishing and trojan activity. An external URI pointing to 'queure.ru' was extracted, suggesting a phishing lure. While no scripts were directly extracted, the PDF structure and the presence of an external URL indicate an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.1797

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://queure.ru/square?utm_term=crying+man+painting
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8bed11b56fd05757a0afe/1625865937320/jedegidex.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8772e8061cb7c4099733d/1625847599031/tafazazutisiketanojelizan.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_off0000bec2.bin
e887fe501d086846440fd78d85c24b3fba9264eba70c2d134d12bf166b2c658a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC2 10276 bytes
font_01_sfnt_off0000d5d7.bin
6fc340670d3f58e0568538bec3f6db37037fafc3e2a10beee37d7ed83fa57e36		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D7 16184 bytes
font_02_sfnt_off0000ffdd.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFDD 16792 bytes

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