PDF malware analysis — malicious · ce31010ea83dfb1f

MALICIOUS

PDF

289.4 KB

MD5: b6e102b0556a1aae53f02e4ff431edc9 SHA-1: a45f1f5e3150427d57fb261d8e2aebbd8001ac93 SHA-256: ce31010ea83dfb1f47af3e31f8aaf2ee070ec81020fa991c0493e1716cb0a74c

210 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF contains an embedded script payload and a launch action, indicating it's designed to execute malicious code. The script itself, when partially reconstructed from the DOC BODY, appears to be PowerShell code that attempts to create a file named 'evil.pdf' in the temporary directory. This suggests the PDF is a dropper or exploit document that downloads and executes a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

Launch action critical PDF_LAUNCH

PDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
Embedded script payload in PDF stream high PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain script execution markers such as ActiveXObject/CreateObject, WScript.Shell, PowerShell, or shell-exec primitives. This is stronger than ordinary PDF JavaScript because it indicates a staged external script payload hidden in stream bytes.
Suspicious extracted artifact medium 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_pdf_script_000482d7.bin` `348f1c084354120d435ba70c7f6893f56bd6c7856fcb8c4071d44d06a7ed429d`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x482D7	296228 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 shell/COM execution token(s). Carved artifact contains 1 long hex-escaped blob(s).

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