Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e2d6a1206b2804e…

MALICIOUS

PDF

83.0 KB Created: 2021-07-13 20:33:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 917973786b2203badbb2edca2d6117e1 SHA-1: b500e0343cdf64c161b79a6dd7cd1a57400cd5eb SHA-256: 6e2d6a1206b2804e82e00cd7a68507b3bf4f66ecf487c47d91ba5120857c2f05
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to lure the user into a phishing or malware download site. The PDF structure itself also shows signs of manipulation, with duplicate object bodies.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6221

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://huntic.ru/square?utm_term=how+do+i+know+how+old+my+bearded+dragon+is
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8b46f3af9106dcce2466c/1625863279485/nilijud.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e82fd5fdc75e32ab0aeb6f/1625829334006/66085428944.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8a6222bd7a9201623ac51/1625859618779/illogical_meaning_in_telugu.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_off0000e287.bin
5882c0ec7d76a9ee4ae731629ab8d9afab672d25d556fd631b0e5deca0a8db32		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE287 11020 bytes
font_01_sfnt_off0000fbaf.bin
e47de08a8a5c8055ec2bc7d99f2fd55421ccf74b9bf527413b6a3347eb58c743		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBAF 17052 bytes
font_02_sfnt_off00012800.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12800 16792 bytes

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