Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeb0f62256b4db9b…

MALICIOUS

PDF

76.1 KB Created: 2021-07-20 05:03:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e1e28b6718ee7a3b8acd104ce752a4e6 SHA-1: fa6f746a691997b91e25c3b8fbc8d8ae68303124 SHA-256: aeb0f62256b4db9b5b25ab016a239fd796fee8bec77ac83914af545350650d87
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ClamAV heuristic identified this PDF as 'Pdf.Phishing.Trojan'. While the document body is heavily obfuscated and unreadable, the presence of embedded URLs and the ClamAV detection strongly suggest a phishing or malware distribution attempt. The embedded URLs, though marked as benign, are often used as part of a chain to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier clean score 0.1538

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/iXsW93xxTQA/square?utm_term=mike+and+molly+outtakes
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f3bf4c860d895b482c9612/1626586956742/download_python_crash_course_2nd_edition.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_off0000c966.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC966 16792 bytes
font_01_sfnt_off0000e17d.bin
6d528310d8a882fa465a2ce645d15aa0263b972e7a238c29a53f3efef6282868		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE17D 10608 bytes
font_02_sfnt_off0000f9ba.bin
b66e0b7b9899daaa522201a2c6f1f4cfe2f3826f1da06387c1ba1ba1031f0549		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9BA 16556 bytes

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