Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3cab18c7900f6db…

MALICIOUS

PDF

5.9 KB Created: 2010-08-29 16:19:36 Authoring application: styeZek colSnap
MD5: 471cba44d1c12c29c9861bd7e69cfac9 SHA-1: 0e8e879bca448ed220bc273d9a7bc57f42df5090 SHA-256: b3cab18c7900f6db36bbdb8ba7ab20c18098d29d340afba8f133069984e14a06
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File

The critical ClamAV heuristic 'Pdf.Exploit.Dropped-81' indicates this PDF exploits a known vulnerability. The 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic further suggests that a script is embedded within the PDF, likely to download and execute a secondary payload. The presence of multiple embedded files reinforces the nature of this exploit as a dropper.

Heuristics 4

  • 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_obj0006.bin
d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777		 pdf-embedded-file PDF EmbeddedFile object 6 at offset 0x234 84 bytes
embedded_file_obj0007.bin
24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0		 pdf-embedded-file PDF EmbeddedFile object 7 at offset 0x2E9 228 bytes
embedded_file_obj0008.bin
3e104dc15468b8c85d8e2a69f27dbfdd3c3ca52699d1ef2352ed54e35c0dc849		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x3DD 1267 bytes
embedded_file_obj0009.bin
c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x718 199 bytes
embedded_file_obj0010.bin
fa267c3359759159ee7872441e55eb8fc1a9c6d06c55eda99f52cc6ec823e363		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x80F 10463 bytes
embedded_file_obj0011.bin
e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x1154 77 bytes
embedded_file_obj0012.bin
92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x11FF 56 bytes

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