Malicious PDF — malware analysis report

Static analysis result for SHA-256 15fad5b36606b2c4…

MALICIOUS

PDF

42.8 KB
MD5: c827885247409112e4274d858bbfdee6 SHA-1: 5e69fa2880289d10f6616fc94bd5d74594f02d1c SHA-256: 15fad5b36606b2c408d7fad1003d80ef8d419b22a59d82be10fc3fe74fbb7d38
176 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF document contains embedded script content and is flagged by multiple heuristics, including ClamAV detection for 'Pdf.Exploit.Agent-36830'. The presence of XFA forms and embedded files suggests an attempt to exploit PDF reader vulnerabilities for code execution. No specific document body text was available for further analysis of the lure, but the technical indicators point to a malicious exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • ClamAV: Pdf.Exploit.Agent-36830 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36830
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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
  • Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
0ab63b2d43445d89482d152efc35f488a1f5b4a2ecf880ce3324ad2380afde26		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 43115 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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