PDF malware analysis — malicious · 08000e97e5c51da5

MALICIOUS

PDF

9.7 KB Created: 2009-02-19 14:45:49 -02:00 Authoring application: Writer (via OpenOffice.org 3.0)

MD5: ceb6daea083085a6b6d82b7d7b8d5463 SHA-1: 025d83fb9be514f5b856eb4ab7094d0964aeabb9 SHA-256: 08000e97e5c51da5bc38a65e21a5ee7274ad34d6b650ca05fcf891e8b52d7d89

188 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1204.002 Malicious File T1566.001 Spearphishing Attachment

This PDF file contains obfuscated JavaScript code that utilizes eval() calls, a common technique for executing malicious payloads. The presence of PDF_LAUNCH and PDF_JS_EXPLOIT_CLUSTER heuristics further indicates exploit activity. The script's primary function appears to be downloading and executing a second-stage payload, as suggested by the embedded artifact name and the nature of the heuristics.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
Launch action high PDF_LAUNCH

PDF contains a /Launch action with an unresolved or extension-less target — treat as potentially dangerous
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_obj0027_000.js` `e61c83d5307d9c5a361a49e4f8e626a67b7ededae10ffe62f7bacc0bc7e24d9d`	pdf-javascript-stream	PDF /JS object 27 at offset 0x1C1B	3307 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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