Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce35a5c475109d4d…

MALICIOUS

PDF

19.7 KB Created: 2010-09-02 14:22:23 Authoring application: penVibe mowVibe
MD5: 0518c156759f4a0b3600507f346db3f2 SHA-1: 34ba490d2829996987d5a1dc3aec88f25bcc6ae5 SHA-256: ce35a5c475109d4d1547b988ddbda0e437df261c519b8a12a6e9e217c417d4fe
138 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.007 JavaScript

The PDF file contains XFA forms with embedded JavaScript, identified as a heap spray exploit. This script is designed to download and execute a secondary payload, indicated by the embedded file artifact 'embedded_file_obj0010.bin'. The presence of XFA and JavaScript points to a common exploit delivery technique for PDF documents.

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.
  • XFA JavaScript heap-spray exploit code critical PDF_XFA_HEAP_SPRAY
    PDF contains XFA script content with heap-spray or shellcode-like JavaScript markers such as large encoded word sequences, util.pack, large arrays, or spray variable names. This is a weaponised Adobe Reader exploit pattern, not a normal interactive form.
  • 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
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

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 0x12C5 84 bytes
embedded_file_obj0009.bin
24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0
pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x1376 228 bytes
embedded_file_obj0010.bin
1927fac0c477b6435651546d70b661365a930b13ff812342b10b98c0b52cb745
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x1469 27796 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s).
embedded_file_obj0011.bin
c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460
pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x4664 199 bytes
embedded_file_obj0012.bin
ca728dad9bd18e14aa6f91c69170c64387c2527cc6a55c9c7658673adf5ceb1d
pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x4755 131 bytes
embedded_file_obj0013.bin
e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876
pdf-embedded-file PDF EmbeddedFile object 13 at offset 0x4812 77 bytes
embedded_file_obj0014.bin
92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a
pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x48B9 56 bytes