Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01f41ca460ec5c2…

MALICIOUS

PDF

77.7 KB Created: 2021-07-13 21:18:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0d5500e7df1aa3dbe542bcd575843a05 SHA-1: afb80ccd0b95bee4dd7966f76d68122ed9acfe83 SHA-256: d01f41ca460ec5c2afa2a3cba014be0f2c445ef01b26fbf08dc7de36a7a2ea7c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains embedded URLs, one of which is associated with a phishing lure. The ClamAV detection indicates it is a Pdf.Phishing.Trojan. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest it is designed to redirect users to malicious content or initiate further compromise. The document body is heavily obfuscated and unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9125

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/um1bUVUAM38/square?utm_term=self+awareness+meaning+in+psychology
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eca6965f8bf9690721444a/1626121878784/guxurenutopane.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec78204c0b954f9ea31bd0/1626109984899/chatterbox_gary_full_episode.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edd1c1a9d1f62037e172b8/1626198466114/shining_star_meaning.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e807cc687a3d659a4dd6dc/1625819084531/pdf_introduction_to_information_technology.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edbcad736bf92f3978e099/1626193069932/nudanuzirov.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_off0000cf6f.bin
1ebff784054f382970a2e4f8559f2a5a6a47aa3a2a657a1e089d4295c7225174		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF6F 11104 bytes
font_01_sfnt_off0000e92e.bin
31b42cb6f2829852e2064c7504b5b3c9a8fc3cf431372e00d3d3f06030a2aec5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE92E 16120 bytes
font_02_sfnt_off000112dd.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112DD 16792 bytes

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