PDF malware analysis — malicious · c87348e0e0c21d56

MALICIOUS

PDF

2.7 KB

MD5: ea7df9cd7f51110ba681ab13730b68d2 SHA-1: ab4632332b1b6fcd287b233b9a1e9a9aef21aa91 SHA-256: c87348e0e0c21d56d73583c3456b716a22687e3ca62674bf556842f621d5da5a

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded and obfuscated JavaScript, indicated by the PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL heuristics. The ML classifier strongly suggests malicious intent. The primary mechanism appears to be the execution of the embedded JavaScript, which is likely responsible for downloading and executing a secondary payload. The lack of readable document body text means the specific lure cannot be determined, but the technical indicators point to a downloader.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info 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
`javascript_obj0007_000.js` `f259361268aa9d0e24a0e3144870ade5516b0e4201f16375e0af0c5823dfae51`	pdf-javascript-stream	PDF /JS object 7 at offset 0xDB	21161 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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