Malicious PDF — malware analysis report

Static analysis result for SHA-256 119f9bb615da7e5a…

MALICIOUS

PDF

42.6 KB
MD5: 26862dc925056e189dfe37a6f4fee927 SHA-1: 0d1772dea7962819582beee1acd21cebabf1d86b SHA-256: 119f9bb615da7e5ae0cb5ccad89775d9e69b7801013a03d042c12dc48642085f
176 Risk Score

Malware Insights

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

The PDF document contains embedded scripts and is flagged by multiple heuristics, including ClamAV detection for 'Pdf.Exploit.Agent-36834'. The presence of embedded files and XFA forms suggests an attempt to exploit PDF rendering or scripting capabilities. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to execute a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • ClamAV: Pdf.Exploit.Agent-36834 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36834
  • 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/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xfdf/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
04462f810d6eacdacecc9d0a5f3f81bebc722af4415e04da19b520338f642b51		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD7 67 bytes
embedded_file_obj0009.bin
983beba342867ba44c50cfb928d1e0105a47a2306962177d5f24b90aed4393fb		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x162 690 bytes
embedded_file_obj0010.bin
1870a8c90be73ebe36ae508f57c55ef58407515a4ad8c7e867914369cf2923c9		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x45F 99 bytes
embedded_file_obj0011.bin
269b4faf25a3c6e012108afb14a261993b7c8b056ec962c761c6a6801741b13a		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x50D 582 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x79E 190 bytes
embedded_file_obj0014.bin
c63c5aeb08a562be90f5903bfc2082d068ff1ca719cadfc2f5255f72236a30ee		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x8A9 40673 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36834
Obfuscation or payload: unlikely
embedded_file_obj0015.bin
78b09463af5cd373870eae2e3e83de87b7f6b659e0d0117ab4c09d90ebb2ad95		 pdf-embedded-file PDF EmbeddedFile object 15 at offset 0xA7D4 68 bytes

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