Malicious PDF — malware analysis report

Static analysis result for SHA-256 62c6eed9a99a1798…

MALICIOUS

PDF

76.5 KB Created: 2021-07-13 19:08:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c5aba317a6b817dce6fc841a4fcbb0ae SHA-1: 1c780554d4241782d9e1799f61421018713febe7 SHA-256: 62c6eed9a99a17987f2bbf3415a5ddfa2d8e9e1133b5c9830e4ddda83448e4b8
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. It contains multiple embedded URLs, one of which is associated with a phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect the user to malicious content, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier clean score 0.2489

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/~3/0YvHz_IItD0/square?utm_term=canon+in+d+violin+sheet+music+free
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8aac7e2b6271615c2fc7/1626114732647/new_years_greeting_crossword.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8321d81471576eaf0c1af/1625829917502/making_lox_in_a_smoker.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_off0000ccb4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB4 16792 bytes
font_01_sfnt_off0000e4c6.bin
4d5e42d36fe88f88869f247e0259f8cae6750cffa5839c455511ebbcd2007b10		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C6 15708 bytes
font_02_sfnt_off00010d24.bin
97856a3b1fcf770a0c07b72b5436070e471e28474ef3d15f108a0f0d31e36e32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D24 10936 bytes

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