Malicious PDF — malware analysis report

Static analysis result for SHA-256 3150af56200c40cd…

MALICIOUS

PDF

7.8 KB Created: 2012-04-06 19:15:32
MD5: 4e3ad982e1aed73d93162f4c49ae640e SHA-1: 235fb3701f9d9688f8e6f82ab9e81d5f27b65994 SHA-256: 3150af56200c40cdfccb569b5dce51ec734c86c5ac36fd26c713667a6ab44867
98 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File

The PDF contains embedded script payloads and is detected by ClamAV as Pdf.Exploit.Dropped-156969-1. The heuristics indicate the presence of an embedded file and an XFA form, suggesting a complex exploit delivery mechanism. The embedded script payload is the primary indicator of malicious intent, likely to download and execute a second-stage payload.

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-156969-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-156969-1
  • 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_obj0010.bin
e8edb01248bea8712df7166e230944ebcebdd3b69a0570481ae338fb16112ce9
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0xC8A 6990 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).