PDF malware analysis — malicious · 7dc0383ea26a9b55

MALICIOUS

PDF

7.1 KB Created: 2012-05-26 20:02:26

MD5: a5e8df5b5faf725d3ee1f1b2604fba8b SHA-1: 9face0ed368d5621510500512fff228f9da7ed31 SHA-256: 7dc0383ea26a9b55365322bdf6a7fea8304343cfd7380f24ae2caf37d2a907ba

128 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Dropped-156969-1', and an ML classifier indicating a high probability of maliciousness. The presence of an embedded script payload and an embedded file suggests the document is designed to exploit a vulnerability, likely leading to the download and execution of a secondary payload. The document body contains fragmented text that does not provide clear context for a specific 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_obj0006.bin` `2471ff9cfd9e1718afc823d6271c8f7fad18f78ca0d5d2a6eb0556879e48d65d`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0x9DC	7012 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 long base64-like blob(s).

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