PDF malware analysis — malicious · d05f1e8a10420f3d

MALICIOUS

PDF

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

MD5: 229beac56646066d689e0ad5d80ea924 SHA-1: 2b6aa428c7586b465e0251f2aeea187c59ea2251 SHA-256: d05f1e8a10420f3d48e431c80ecc202bee2d3e5d9f4530b45a58341a7ca2152a

130 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell T1105 Ingress Tool Transfer

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection (Pdf.Exploit.Dropped-156969-1) and an ML classifier indicating maliciousness. An embedded file and script payload were identified, suggesting the document is designed to exploit a vulnerability and download a second-stage payload. The document body text appears to be obfuscated or corrupted, providing no clear lure.

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` `36838bd4e76a695f138cee5bade7980f8f8853d5035184bf33bb272fca96a48b`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0xCB8	7229 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 long base64-like blob(s).

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