Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6501a07dc7395f9…

MALICIOUS

PDF

84.4 KB Created: 2021-07-14 09:24:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6a16a5cbc3268f09256a9ddda4310ef2 SHA-1: 3cf09e4b20a6db527cec8d09062c652de4785d36 SHA-256: d6501a07dc7395f939e04661279b26da1cd5482f0c028237a53d08f5ce23e313
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'infrive.ru', which is likely a phishing or malicious site. No scripts were extracted, but the presence of the malicious URI suggests an attempt to redirect the user to a harmful resource, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8083

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://infrive.ru/square?utm_term=how+old+is+the+earth+based+on+the+bible
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8f2dfb68d8f0f4bf608e0/1625879263986/todenuvazelotatolesid.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee668faa539923b5891ed1/1626236559877/basic_conditions_of_employment_act_summary.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7f48a4b964f05b8492bc2/1625814154376/86113783818.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ece8b1f9a98d6db3a6b22f/1626138802263/buwopovalulis.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee69037426fb5109f760b5/1626237187563/7685458667.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_off0000ea74.bin
633f5309b9d89853c123f5314a2d72446b80ebbb40676ae25cf0272cfb68e934		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA74 16712 bytes
font_01_sfnt_off000115be.bin
edccaec044f409288e9ae61e198118fd5d7f08adbe38674bba8d3d66ac6764bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115BE 10564 bytes
font_02_sfnt_off00012dc2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC2 16792 bytes

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