Malicious PDF — malware analysis report

Static analysis result for SHA-256 60cf8a3e0d009778…

MALICIOUS

PDF

74.1 KB Created: 2021-07-14 10:12:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b7e33634346858006171a94721735f38 SHA-1: 439d7c523e52317231c9b133de984d4244f42fe7 SHA-256: 60cf8a3e0d0097784e83f2090caba24c23cf653a2c497a707e75c6d36aa2710c
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The presence of this external link suggests an attempt to redirect the user to a phishing or malware distribution site. No scripts were extracted, but the embedded URI is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.2277

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://drafthe.ru/square?utm_term=how+often+should+you+acid+wash+your+pool
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e77ac59478bd36b3723c8e/1625782981940/lajipukavodagaveg.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee06bf8443ee2c89345b05/1626212032129/ts_eliot_works.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_off0000bf1e.bin
a5dcb2ca10f7b9021edf970b47eb891a22df5931d4864c96f1911fb525ff4d46		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF1E 11008 bytes
font_01_sfnt_off0000d8af.bin
5b4a3ee821e91a226ef518bdda805a11c97a9ef7869aa743936ba7abeef653d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AF 16380 bytes
font_02_sfnt_off000102ec.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102EC 16792 bytes

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