Malicious PDF — malware analysis report

Static analysis result for SHA-256 19fe34fa689843d7…

MALICIOUS

PDF

77.5 KB Created: 2021-07-12 21:51:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e7af1e720c17e8e0694176bd243946e9 SHA-1: 52068ad8483d3abd4fdcae71fe9ad3d92c3321d8 SHA-256: 19fe34fa689843d728414c351f5a1ab50a6841c99cb49e1825afda703a37be5a
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature Pdf.Phishing.Trojan. The PDF contains an embedded URI pointing to a URL that, while currently marked as benign, is suspicious in context. The presence of embedded URLs and the nature of the ClamAV signature suggest a phishing attempt, likely using the document as a lure to direct users to a malicious site. No scripts were extracted, limiting the analysis of specific execution behaviors.

Machine Learning

  • Nyx PDF Classifier clean score 0.1551

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/sq/ugae/~3/eoPDrVzwpx0/square?utm_term=length+of+30+60+90+triangle
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8ee6c309bd63f3d83b392/1625878124361/veviboridutorunaripi.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_off0000cc75.bin
aba9bc9b95757f33fbe94849dd2aa98574f4494f7235304e4146bb4d8ed56c73		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC75 17156 bytes
font_01_sfnt_off0000f981.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF981 16792 bytes
font_02_sfnt_off00011198.bin
9b8f2038d8e3f44587696450992646beea1f3010b8f3b004a8b8b20b65b70d1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11198 10912 bytes

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