PDF malware analysis — malicious · 219d392629fc4a0c

MALICIOUS

PDF

15.9 KB

MD5: b3133889a2b566b95f54f3a434ff2d0a SHA-1: 5cefc93cf6e7002e430af32edec04125d381824d SHA-256: 219d392629fc4a0c4d56b42a499621a0ecaf07b4a91c3c986e4acab912a9b045

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript that utilizes an eval() call, indicating obfuscated code execution. This script is likely responsible for downloading and executing a second-stage payload from the embedded URL http://67.209.224.57/f.exe. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it's designed for exploitation.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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.
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://67.209.224.57/f.exe

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0005_000.js` `d444d77f1ef124de7100319d138e483b5d7f695e287e35f4919cf117a42159e0`	pdf-javascript-stream	PDF /JS object 5 at offset 0x1A4	15516 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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