PDF malware analysis — malicious · 7b339e75f4f6998e

MALICIOUS

PDF

244.6 KB

MD5: 4e56180e23ddf9e0f5a283808322dd32 SHA-1: aff2a885a0e68cda1f6f1e546e684f03574e0716 SHA-256: 7b339e75f4f6998ed4f0c8d21e981dbf6d7ad9342cda96d431e104f01b73b952

300 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains an embedded script payload and a launch action configured to execute cmd.exe. This indicates the file is designed to download and execute a second-stage payload. ClamAV detections further support its classification as a dropper.

Heuristics 6

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
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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` `eb1d846ba9d83807962ffa270d932608898a7e4e4a9ea6b17c755face3ae91c5`	pdf-embedded-script	PDF raw stream script payload at offset 0x3CC96	248961 bytes
Detection ClamAV: Win.Trojan.Dropper-133 Obfuscation or payload: likely Carved artifact contains 2 shell/COM execution token(s).

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