PDF malware analysis — malicious · de2e731fbf1a1c8a

MALICIOUS

PDF

7.7 KB Created: 2012-04-17 19:53:38

MD5: 39907523f17b7ae42f35da7607b0d8a8 SHA-1: be734e58237a40919ac33d4f75c53c0bb54b40d5 SHA-256: de2e731fbf1a1c8a0994cbe6dae1bd60e8a0c2e78d37ffc4bbbcf5cfac4356f8

128 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter T1059.001 PowerShell

The file is identified as malicious by ML classifiers and ClamAV, specifically as Pdf.Exploit.Dropped-156969-1. Heuristics indicate the presence of an embedded script payload and an embedded file, suggesting the PDF is designed to exploit a vulnerability. The embedded file, 'embedded_file_obj0008.bin', is likely the second-stage payload. The document body contains obfuscated text that does not provide clear user-facing lures.

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.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `a2c7ab1edfd1d1af1319078ab96985a3be657fb21c6859e727b0288f8cd3f004`	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).

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