Malicious PDF — malware analysis report

Static analysis result for SHA-256 48c0a6ca31f1a694…

MALICIOUS

PDF

7.6 KB Created: 2012-04-17 19:53:38
MD5: 55cf1b56064742cbcd1fdae7b8d81918 SHA-1: b4e0c31bdd9ed665f839264b6405ec6b2fd22e7e SHA-256: 48c0a6ca31f1a694d74811c866b448dd78ee8ef0ee66b13e1960a541ef2a7f06
98 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains an embedded script payload, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. ClamAV detection as 'Pdf.Exploit.Dropped-156969-1' strongly suggests it's designed to exploit a vulnerability. The embedded file artifact further supports the payload delivery mechanism. The document body text is largely unreadable due to encoding or truncation, but the presence of XFA forms and embedded content points towards a malicious exploit delivery.

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_obj0008.bin
fd0169255a55cdbfe0c9e44c6bb1a6a17483e3a05dcdfbcae7ca8a923ae6c055
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xBAF 7163 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).