Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be3dab47bb1581f…

MALICIOUS

PDF

4.3 KB Created: 2011-04-05 23:46:28 Authoring application: bub lob
MD5: 515643f0a458d6c7d6ad3d86b2374f3e SHA-1: 038ac6119bb5fdd5bd72a7e32600ef8b9c28e330 SHA-256: 1be3dab47bb1581f72356b868f3a73f1b786eaa295c3790befb6651b168e9dd8
78 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded, obfuscated JavaScript, indicated by the PDF_XFA_SCRIPT and PDF_EMBEDDED_SCRIPT_PAYLOAD heuristics. This script is designed to execute arbitrary code, likely to download and run a secondary payload, as suggested by the embedded file artifact. The XFA form structure further supports the exploitation of PDF vulnerabilities.

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.
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
602cb61f69bec77b28471b021a64a24361e2040a1e77903b32cbfa6a55c29e78
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x169 13096 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).