PDF malware analysis — malicious · f227c0881a7e73a8

MALICIOUS

PDF

289.4 KB

MD5: 009837838774b85c2cd7fd2900163e26 SHA-1: e9a37a599cbae7c0568321c59316af97773d8ada SHA-256: f227c0881a7e73a80739645bfef04b0434c0b022a7b399330a6e63002a9823c4

210 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains an embedded script payload and a launch action, indicating malicious intent. The embedded script, when executed, appears to construct a command line using cmd.exe to potentially download and execute a secondary payload. The ML classifier and ClamAV detection strongly suggest this is a malicious dropper.

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: Pdf.Dropper.Agent-7323111-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7323111-0
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_000482df.bin` `cdb3090b314148e28c9d22609d133e66f83ea134f81637a31722611884ff2153`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x482DF	296236 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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