PDF malware analysis — malicious · 5401ecf33fc7a4ed

MALICIOUS

PDF

7.8 KB Created: 2012-04-06 19:15:32

MD5: 1ea51285278a6e27e1271d518caefb33 SHA-1: 21e5135cb2607a060bfc9e2975096ad70c3b62ba SHA-256: 5401ecf33fc7a4edcf87aea5a683d0e2620ef6ca23284412203a2d84145b5161

128 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 for 'Pdf.Exploit.Dropped-156969-1' and an ML classifier indicating high maliciousness. The presence of an embedded script payload and an embedded file suggests the document is designed to exploit a vulnerability, likely to download and execute a second-stage payload. The document body contains seemingly random text, indicating it is not intended for human consumption and likely serves as a lure or contains obfuscated exploit code.

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` `6d30acf9061786b59b794983c57e9d2227a2db1a0354906dcb3dc5da421f2679`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0xC8A	6998 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 long base64-like blob(s).

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