PDF malware analysis — malicious · a2915f46518d5bbd

MALICIOUS

PDF

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

MD5: b4aa2c2f77b68cf25e4413c780e2c67a SHA-1: a7197f8721ae13a47bbeedd9d59dd69c488b4ac1 SHA-256: a2915f46518d5bbd4efd07d0b5b4c7c97237ec341d70e6ab09874af7ff1efa72

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 multiple heuristics, including a critical ClamAV detection (Pdf.Exploit.Dropped-156969-1) and a high ML classifier score. A PDF embedded script payload was detected, indicating the document is designed to exploit vulnerabilities and deliver a secondary payload. The embedded file artifact further supports this. The document body contains nonsensical text, suggesting it is not intended for human consumption but rather to obscure the malicious content.

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` `5d31a95bc360f00a4e75a5620dc83330a19baef6657d3ebd41a40eac715662fd`	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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