PDF malware analysis — malicious · 0a256fe6c8ce9452

MALICIOUS

PDF

22.0 KB Created: 2000-05-09 22:28:06 Authoring application: FrameMaker+SGML 6.0: AdobePS 8.5.1 (via Acrobat Distiller 4.0 for Macintosh)

MD5: 6d0258216ff8ee9ee2635bad2dc88d7d SHA-1: 6bc94f998c49ff90af8eee576c4097e91599dcd3 SHA-256: 0a256fe6c8ce9452714d03188875f63da1231d4410255cf4be4ecaabd8ba19fc

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains an embedded JavaScript payload that attempts to execute further commands. The document also contains heuristics indicating a lure to execute commands via the clipboard, likely to run the embedded script. The script itself appears to be a downloader or dropper, as evidenced by its structure and the registry read for script settings, suggesting it prepares for further execution.

Machine Learning

Nyx PDF Classifier suspicious score 0.4951

Heuristics 4

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.
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://www.skyi-
- http://www.mirc.com

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_00001b9e.bin` `e73ed089b5f202e2fefba867116861f109e59914e20ac39407e5a8ffd360714a`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x1B9E	2746 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

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