Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ebb6d90fb1a8d9f…

MALICIOUS

PDF

17.8 KB Created: 2010-08-29 16:19:36 Authoring application: styeZek colSnap
MD5: 65fa67dfe35c63509a3f2002817b8f44 SHA-1: aed9f4280c0db6656b7a4e11bfd253402372ad1a SHA-256: 1ebb6d90fb1a8d9f8bb505b03409760f6bab0cfc846c43a9a24e1144ba7ca76d
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell T1190 Exploit Public-Facing Application

The critical heuristic firing 'CLAMAV_DETECTION: Pdf.Exploit.Dropped-81' indicates this PDF is a known malicious exploit. The presence of embedded script payloads and XFA forms further supports this, suggesting the PDF is designed to leverage vulnerabilities to download and execute a secondary payload. The exact nature of the payload or its download mechanism is not directly discernible from the provided evidence, but the intent is clearly malicious exploitation.

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 0x213 84 bytes
embedded_file_obj0009.bin
24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0
pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x2C4 228 bytes
embedded_file_obj0010.bin
29abf4713e234d695651d36f2589a331a1230cce8692cfec949334ea08af1c90
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x3B7 1385 bytes
embedded_file_obj0011.bin
c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460
pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x6EA 199 bytes
embedded_file_obj0012.bin
061f1eb2af2172272a55ba573e99e94b0927ad6b4013c023c22c5b17f959c641
pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x7DC 34224 bytes
embedded_file_obj0013.bin
e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876
pdf-embedded-file PDF EmbeddedFile object 13 at offset 0x4286 77 bytes
embedded_file_obj0014.bin
92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a
pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x432D 56 bytes