PDF malware analysis — malicious · 917c2bfab8b7d339

MALICIOUS

PDF

45.1 KB

MD5: 6949ce42e8eba6b5280399b2361fcb3a SHA-1: 21ce4b0941240bfd470c2431df810e8bb569f394 SHA-256: 917c2bfab8b7d3395e2176569d92e7bc0785be94ce0fa130f8e05ffc9b26e395

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded obfuscated JavaScript, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. The script appears to construct a command line that uses cmd.exe to create a file named 'evil.pdf' in the public directory and then attempts to execute it. This suggests the PDF is acting as a downloader for a secondary malicious payload. The CLAMAV_DETECTION heuristic further confirms its malicious nature.

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_0000b1af.bin` `a06e94f7a8e46ee19d94c36df40964a5742ba1964a3d2bcbefbf1eb024346743`	pdf-embedded-script	PDF decompressed stream script payload at offset 0xB1AF	46087 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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