PDF malware analysis — malicious · e456adc29bba896d

MALICIOUS

PDF

7.9 KB Created: 2012-04-27 17:25:24

MD5: 0b4e3ce995fe7d5097ea3ea8e69c5a71 SHA-1: c20733ddda0bca9653f518edf9c6e93111634993 SHA-256: e456adc29bba896dc85909ac2f13467da4ecd7b0cb4fbf38fb0bdade3d76525b

128 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The file is identified as malicious by ML classifiers and ClamAV with the signature Pdf.Exploit.Dropped-156969-1. Static analysis indicates the presence of an embedded script payload within a PDF stream, which is a common technique for delivering secondary payloads. The embedded file artifact further supports the dropper functionality. The document body text is truncated and does not provide specific 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_obj0010.bin` `cdf816234832c9c1b0f5e1c6723ef3f865880f70a1d9aacbaa4ab50d902233c9`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0xCB8	7237 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 long base64-like blob(s).

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