Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1404316b8ac90a0…

MALICIOUS

PDF

17.6 KB Created: 2010-08-29 16:19:36 Authoring application: styeZek colSnap
MD5: a6a95cdc184379fd356a6af46d4b6eb6 SHA-1: 9ec7d75abc03b2d97af7d053c6e95127e8b925e9 SHA-256: e1404316b8ac90a0ee345ae6ea5091cb7fea6262681600b8911e8aa0939d4637
166 Risk Score

Malware Insights

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

The PDF file contains embedded scripts and is flagged by multiple heuristics, including ClamAV detection as 'Pdf.Exploit.Dropped-81'. The presence of embedded files and XFA forms with risky scripts indicates an attempt to exploit PDF vulnerabilities. The ML classifier also strongly suggests maliciousness. The embedded URL, though benign, is part of the document structure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 0x1E9 84 bytes
embedded_file_obj0009.bin
24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0
pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x298 228 bytes
embedded_file_obj0010.bin
2fbb628a475c9c98b23880b6e6de21dae3bfac5534310d7f42a58e4648302133
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x38B 1312 bytes
embedded_file_obj0011.bin
c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460
pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x6AD 199 bytes
embedded_file_obj0012.bin
28858c98839c86fccf082efd7d199758f4052867a36990e1f0bda7bbf88e05a8
pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x79F 33927 bytes
embedded_file_obj0013.bin
e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876
pdf-embedded-file PDF EmbeddedFile object 13 at offset 0x41CE 77 bytes
embedded_file_obj0014.bin
92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a
pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x4275 56 bytes