Malicious PDF — malware analysis report

Static analysis result for SHA-256 e00d6eb950413c7a…

MALICIOUS

PDF

75.0 KB Created: 2021-07-14 08:37:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d9c6418b7873ea71a5302adc134bae9d SHA-1: 21e279c728862b4b8855f9e4e99c87fa381d0439 SHA-256: e00d6eb950413c7ae67254f88983f4f993de98b0ecea92846f8af44b11071033
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. It contains an embedded URL that, while currently marked as benign, is likely part of a phishing lure. The PDF structure and embedded content suggest an attempt to trick the user into clicking the link, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7788

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/sq/ugae/~3/7R6buoffwiA/square?utm_term=directorate+of+higher+education
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec8832cc9768212243352e/1626114098527/periodic_table_group_iv.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee5bd2f6c772366d300572/1626233810814/dijizujalowoke.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8c0bdb825900159c1e1a5/1625866429133/lusagivijuzekalavu.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_off0000c76a.bin
6db5643e621f6492bbdb5dc3a4bbb3b45da9e773acbbc5f6ab9b7eae698855f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC76A 10644 bytes
font_01_sfnt_off0000df82.bin
96649e462edb4a0d1b893eb2463eb60d745bd891ccfe4f6b8ea425b88a17d6d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF82 15996 bytes
font_02_sfnt_off00010871.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10871 16792 bytes

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