Malicious PDF — malware analysis report

Static analysis result for SHA-256 4030acbb9ef4075f…

MALICIOUS

PDF

17.5 KB Created: 2010-08-29 16:19:36 Authoring application: styeZek colSnap
MD5: 64eeabbf0aa12abb5ee7a74230323583 SHA-1: 5996ff4698f39f53a5a8d06382c023e260494a44 SHA-256: 4030acbb9ef4075fd824f7f130fd3e8651439cd1c8335b017250d6fb36c14a52
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.007 Scripting: JavaScript T1559.001 Component Object Model: Component Execution

The PDF file contains a high-severity heuristic firing for XFA forms with risky executable scripts, indicating it is designed to exploit vulnerabilities. The ClamAV detection 'Pdf.Exploit.Dropped-81' further confirms its malicious nature. While no specific script content was readable, the presence of embedded files and XFA scripting strongly suggests the PDF is a dropper for a secondary payload.

Heuristics 6

  • 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
  • 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/

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 0xDB 84 bytes
embedded_file_obj0009.bin
24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0
pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x18A 228 bytes
embedded_file_obj0010.bin
cc8db26fa94c2b0f9bbd77e3c1567cbf89aff3b513661f17375bf9f32c0eb652
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x27D 1345 bytes
embedded_file_obj0011.bin
c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460
pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x5B3 199 bytes
embedded_file_obj0012.bin
1d12cc896ef33d8f40f5828a182945d8d3ce70d358dc94c787b237f7cb6ec2cc
pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x6A5 34304 bytes
embedded_file_obj0013.bin
e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876
pdf-embedded-file PDF EmbeddedFile object 13 at offset 0x4169 77 bytes
embedded_file_obj0014.bin
92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a
pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x4210 56 bytes