Malicious PDF — malware analysis report

Static analysis result for SHA-256 568b87e8c8e4a5ec…

MALICIOUS

PDF

73.7 KB Created: 2021-07-13 08:18:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ddc6f9b2109b0f94e112c7472912e111 SHA-1: e80fcd43c16581e72e8c3cfec191ef93ba41033d SHA-256: 568b87e8c8e4a5ec4b4c2529d3b0384e07a9dfe5c9da7eb8241ccbaca39fa804
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The PDF structure and embedded content suggest an attempt to exploit user trust by presenting a deceptive lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8028

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://irlanc.ru/square?utm_term=top+video+player+for+windows+7
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8c3233601b306b46fe163/1625867043163/27028037998.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8e2f3db8bb141bad61922/1625875187976/unlimited_power_tony_robbins_review.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec8f2f97282d6f46913363/1626115887193/contract_summary_template.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_off0000c18e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC18E 16792 bytes
font_01_sfnt_off0000d9a5.bin
2733cba6464eef4f0509f24d873ab463bb27378fed2071d3ed37ca135c210c07		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A5 10672 bytes
font_02_sfnt_off0000f250.bin
44091dbb4fd59ac7bef6ad0d3a7dcf259e15e0e3f8e140babb8515a389d96618		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF250 16028 bytes

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