Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b132b64a40687bb…

MALICIOUS

PDF

17.8 KB Created: 2010-08-29 16:19:36 Authoring application: styeZek colSnap
MD5: 6a4dafdc4f35986d87b14ace15f3a450 SHA-1: b1fdeb83f1d272dd20fa6af6a04034617f7ef8e9 SHA-256: 2b132b64a40687bb4da9265135245cac792816decedd4b3f3b75aa47e8530fbe
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell T1105 Ingress Tool Transfer

The critical heuristic 'CLAMAV_DETECTION: Pdf.Exploit.Dropped-81' indicates this PDF is a known exploit dropper. The presence of embedded script payloads and XFA forms further supports this, suggesting the document is designed to exploit a vulnerability and download a secondary payload. The specific exploit and payload are not detailed in the provided evidence, leading to an 'unknown family' classification.

Heuristics 5

  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • ClamAV: Pdf.Exploit.Dropped-81 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-81
  • Embedded script payload in PDF stream medium 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 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

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x207 84 bytes
embedded_file_obj0009.bin
24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x2B8 228 bytes
embedded_file_obj0010.bin
842781ea45de3cec67f869760f93a1f7ae48095c80d92a09babf591b140a2562		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x3AB 1351 bytes
embedded_file_obj0011.bin
c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x6DE 199 bytes
embedded_file_obj0012.bin
e16a55648493e9b484bab29520fca0e4df8de7709f0fffe0032b577ae0c224df		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x7D0 34217 bytes
embedded_file_obj0013.bin
e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876		 pdf-embedded-file PDF EmbeddedFile object 13 at offset 0x426F 77 bytes
embedded_file_obj0014.bin
92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x4316 56 bytes

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