Malicious PDF — malware analysis report

Static analysis result for SHA-256 be9313e744c8e6db…

MALICIOUS

PDF

133.8 KB Created: 2011-01-15 +08:00 Authoring application: 376377000P000D000F000C000r000e000a000t000o000r000 000V000e000r000s000i000o000n000 0000000.0009000.0003 (via AFPL Ghostscript 8.54)
MD5: 96140f85e2a1ab212655775400e3c8d5 SHA-1: 0babdbc53a0fcf48ece7e7290dc000cb67dfa31f SHA-256: be9313e744c8e6db9124cdce807699f7bff4d7e0a5a21fc568b61da9be6bdfdd
78 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file was detected as malicious by ClamAV with the signature Pdf.Dropper.Agent-7597670-0. Static analysis revealed an embedded file and XFA form, indicating a potential dropper or exploit delivery mechanism. The embedded file, named 'embedded_file_obj0043.bin', is a strong indicator of malicious intent, likely serving as a second-stage payload.

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-7597670-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7597670-0
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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 http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/iX/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://purl.org/dc/elements/1.1/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0043.bin
a24b07db424a8d1ede88aa76cd01be07ff9fddcf6ac97347ed178936c5803040		 pdf-embedded-file PDF EmbeddedFile object 43 at offset 0x3C4C 265198 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).
font_00_sfnt_off0000180a.bin
cb2d6203dc1a8a2f6b8ed4ef069a95f5ae720860b5e2cfe4a50516b2e696aa2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x180A 16244 bytes

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