Malicious PDF — malware analysis report

Static analysis result for SHA-256 28df93ee9c68f3c4…

MALICIOUS

PDF

7.6 KB Created: 2012-04-17 19:53:38
MD5: 627cc06e7728a0f44dcde9c7fea50846 SHA-1: 54e26168491d148ef0929ac3ab4f294a78797423 SHA-256: 28df93ee9c68f3c43ad751ca492dd66f2fba8cd26d2b5dabd77c6b58a63e8562
98 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Dropped-156969-1' strongly suggests this PDF is designed to exploit a vulnerability. The presence of an embedded script payload and an embedded file further supports this, indicating the document likely serves as a dropper for a secondary malicious payload. The document body text appears to be corrupted or obfuscated, providing no clear user-facing lure.

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
0ac69ce1cd442458ba353de78fe406b9712a3c18771af57177fe2a0dcc51ee83
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).