Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2a0305b9a6ac708…

MALICIOUS

PDF

74.6 KB Created: 2021-07-14 09:35:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 92a35c655458cb11930e66b16aec3c27 SHA-1: de2459672eb0f833dc3aef372e9993bb7c6a4804 SHA-256: f2a0305b9a6ac7083c94a10808d3d69eb03bc6011057a4cc44379b38667334cf
106 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The file is identified as malicious by ClamAV and exhibits a critical heuristic for clipboard command execution lures. This suggests the document is designed to deceive users into executing commands, potentially leading to further compromise. While no scripts were extracted, the presence of a lure to interact with the command line is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2593

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/W5vEtEh6t-A/square?utm_term=create+pdf+from+php
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8b5584129c85887a6becb/1625863512275/95225211240.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee2a2f39b826033868d456/1626221104422/dexagajepogugafubem.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_off0000c24a.bin
388c8289ce6b94eb0f0ff0a499b4f651391f5c59abad4a8ce735624889d0ebf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC24A 17264 bytes
font_01_sfnt_off0000ef98.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF98 16792 bytes
font_02_sfnt_off000107af.bin
52d699b8b65ca8f13e10c5f1cfd9d50f5acc7ace83269d518b6242011f3c8156		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107AF 10384 bytes

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