PDF malware analysis — malicious · af85f1229b81d966

MALICIOUS

PDF

289.4 KB

MD5: 807eb25e057ff05fe3d041bd2b0ab6f5 SHA-1: 461b6b3e20e2cc1b771fbdea927ce9141c505baf SHA-256: af85f1229b81d966d839459e032a02b37ee5e570922ccd9918e789143086e10a

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains an embedded script payload, indicated by the PDF_LAUNCH and PDF_EMBEDDED_SCRIPT_PAYLOAD heuristics. The script, named embedded_pdf_script_000482d9.bin, is likely responsible for downloading and executing a second-stage payload. The CLAMAV_DETECTION heuristic further confirms its malicious nature. The script appears to use PowerShell commands to achieve its objective.

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_000482d9.bin` `8bfc34edea8b97be63a760c6c420d66ba2b0fe0d8f2c4ea1158991c52b5becff`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x482D9	296230 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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