Malicious PDF — malware analysis report

Static analysis result for SHA-256 26a161558c8c877a…

MALICIOUS

PDF

80.0 KB Created: 2021-07-12 21:27:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 790f286ff3a7e8e94e6080c502eb1fe7 SHA-1: fe517e3f5f2d83ad3a6e79766569ae4a8ad684a2 SHA-256: 26a161558c8c877a1a8f690688ae25126fd15480befd530e20f223097660ae4e
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URI pointing to an external website, identified by ClamAV as a phishing trojan. The URL likely hosts a malicious payload or phishing page, attempting to trick the user into visiting it. No scripts were extracted, but the presence of the malicious URI and the ClamAV detection strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.1467

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=happy+21st+birthday+wishes+for+sister
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7eda82b4c978cf4117af/1626111706720/xefalawevafewojom.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec83eefa40056e74d248f2/1626113006529/cold_feet_and_aching_legs.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_off0000dc4b.bin
8489cafedf81e9685ec55db2e2d7b424bb9bcfe642a04bb37bd5e9efffbb3ddb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4B 15332 bytes
font_01_sfnt_off00010315.bin
6093da69b64d8d27933a77c9eda01f8a03baa0d85fa1cd90e28ce0c2fe45fd20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10315 10948 bytes
font_02_sfnt_off00011c90.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C90 16792 bytes

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