Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf186d713ee1582e…

MALICIOUS

PDF

17.6 KB Created: 2010-08-29 16:19:36 Authoring application: styeZek colSnap
MD5: 3c97336488f2ce931b1bf61eccf82f81 SHA-1: 4d919b475f89dc3090f6febae34185fcac8e7cdc SHA-256: bf186d713ee1582e015fecbffb5de01a0c5b55126b9292949505ff5dca9ea3ce
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter

The critical ClamAV detection 'Pdf.Exploit.Dropped-81' and the high heuristic 'PDF_XFA_SCRIPT' indicate that this PDF exploits vulnerabilities. The presence of embedded files and scripts strongly suggests it's designed to download and execute a secondary payload. The XFA form contains risky executable script, which is a common technique for exploiting PDF viewers.

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
02fefd945f25895592e1b35492664679dce2ac8b5339bff3bef16a1bc918eca4
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x3AB 1338 bytes
embedded_file_obj0011.bin
c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460
pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x6DD 199 bytes
embedded_file_obj0012.bin
90ccb465cae194a0e56c2803832bb40c3b0e966826cd741f106969c219816d83
pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x7CF 34035 bytes
embedded_file_obj0013.bin
e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876
pdf-embedded-file PDF EmbeddedFile object 13 at offset 0x41D1 77 bytes
embedded_file_obj0014.bin
92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a
pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x4278 56 bytes