Malicious PDF — malware analysis report

Static analysis result for SHA-256 02607edfd1f90dc7…

MALICIOUS

PDF

71.5 KB Created: 2021-07-15 22:47:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5c68664a9dd480d4df9041b4d3ea6536 SHA-1: 7c82dd6d690d74a284ffc03b0b057d90a06cab4c SHA-256: 02607edfd1f90dc751e3380da6cd619e10fca1465056615d40bb961094fb1eb3
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URL pointing to 'allytemp.ru', which is flagged as malicious. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. The presence of an external URI and the ClamAV detection strongly suggest a phishing attempt designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.2209

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://allytemp.ru/square?utm_term=r+and+r+auto+georgetown
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f063ff05f87640ba7ec370/1626366976067/kurixukisadij.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ed9fbc3680ef421b54e0a0/1626185660781/5010343898.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_off0000b606.bin
b3027a4dd1d3a78efae6e1d1d7e549309103b38b728dd4177cd63ae4e20cbada		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB606 10348 bytes
font_01_sfnt_off0000cd60.bin
0dc2657a2cf8f3bccdef048f00501239edd9cdc3531b5f85c8bc04dbd21f756f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD60 17312 bytes
font_02_sfnt_off0000fa99.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA99 16792 bytes

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