PDF malware analysis — malicious · bdf15273665c997b

MALICIOUS

PDF

289.4 KB

MD5: 2c2174d1289a95e71548bdc72d1b91e1 SHA-1: 00ba51e3af675261b8cd79fa7b3839e1b3243d90 SHA-256: bdf15273665c997b5123f40fcac3298c23ac807738ee5fd87599d411b097a3c6

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains an embedded script that is obfuscated and designed to be executed. Heuristics indicate a launch action and an embedded script payload, with ClamAV flagging it as obfuscated. The script appears to use cmd.exe to construct a command line that likely downloads and executes a second-stage payload from a remote source, indicated by the use of WScript.Shell and environment variable expansion.

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` `9db091455b77f7b7cfbf8b581c205e044504c6bc4798f23ec7b2432df9e9eb9f`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x482D7	296278 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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