Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32edc17f9b87cf6…

MALICIOUS

PDF

7.2 KB Created: 2012-04-21 19:58:55
MD5: 26af1a777bc8de2d8508d38f68a2b8d9 SHA-1: 948248bffa7f0ff1dd868526bda525f8da1cd2d0 SHA-256: c32edc17f9b87cf6bb91908131dc4ca8e280aeb8717f8a1700c5cd6e3f9c7aad
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The file is identified as malicious by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Dropped-156969-1'. The PDF contains an embedded script payload and an embedded file, indicating it's designed to drop and execute further malware. The ML classifier also flagged it with a very high probability.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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_obj0006.bin
c98134d6f03c6c5aa983a09f7c5772d5b157ba7271a36d655e9efa13ea3924f5
pdf-embedded-file PDF EmbeddedFile object 6 at offset 0x9D0 7172 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).