PDF malware analysis — malicious · d2a4109030835060

MALICIOUS

PDF

289.4 KB

MD5: 7b52c2231156778551daa122a7777a34 SHA-1: c4b0ed3c998f86de3a795f51af7e35859d998167 SHA-256: d2a4109030835060c90e937c083e1396d20dfa72e150665136368a7b8d568103

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.003 Windows Command Shell T1204.002 Malicious File T1027 Obfuscated Files or Information

The PDF file contains embedded obfuscated script content, indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' and 'CLAMAV_DETECTION' heuristics. The script, when executed, constructs a command to create a file named 'evil.pdf' in the temporary directory and writes a large amount of data to it, likely a second-stage payload. The 'PDF_LAUNCH' heuristic further confirms the intent to execute external content.

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` `bb4fa6155e31843ef2e1522f00678378348966e7ffffddaa237d1018ac05f4d1`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x482D7	296228 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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