PDF malware analysis — malicious · 295611f7ff5e82b3

MALICIOUS

PDF

244.6 KB

MD5: 475d682bdc80fdfca8b8e452ca3423ae SHA-1: 6650c7fad5b39cce5e2a46e44032d2fe10f1549e SHA-256: 295611f7ff5e82b3f989c4958cc48c6aea327bfa16453bea6757493d79cfe4b2

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.003 Windows Command Shell T1204.002 Malicious File

The PDF file contains a launch action that executes cmd.exe, indicating an attempt to run arbitrary commands. This is further supported by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' and 'PDF_LAUNCH_COMMAND' heuristics, suggesting the embedded script is designed to download and execute a second-stage payload. The ClamAV detection as 'Win.Trojan.Dropper-132' reinforces this assessment.

Heuristics 5

Launch action critical PDF_LAUNCH

PDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
/Launch action target: cmd.exe critical PDF_LAUNCH_COMMAND

PDF /Launch action specifies an executable target with parameters '/c echo Set fso=CreateObject("Scripting.FileSystemObject"' — references a known-dangerous executable (cmd, PowerShell, etc.).
ClamAV: Win.Trojan.Dropper-132 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Dropper-132
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_0003cc96.bin` `0aedd47ab11c4c44b3b3df8fe561efd740549d18440f55129a263bf16a0d13f5`	pdf-embedded-script	PDF raw stream script payload at offset 0x3CC96	248961 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 shell/COM execution token(s).

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