PDF malware analysis — malicious · 0cc2c0f49f560d98

MALICIOUS

PDF

7.8 KB

MD5: fc278d9e32398fe1e65dc0f4a29fd929 SHA-1: f0a81b137ad537b10b0b0f962fedf1269644015e SHA-256: 0cc2c0f49f560d9816fed317b894f67a19a0839fa43c20f977d1ce4c7bb081d1

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF sample contains embedded JavaScript that utilizes an eval() call, indicating an attempt to execute arbitrary code. This JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for initial compromise via malicious documents. The presence of PDF-specific exploit heuristics further supports this assessment.

Machine Learning

Nyx PDF Classifier malicious score 0.9483

Heuristics 5

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.
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. (matched inside decoded stream)
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. (matched inside decoded stream)
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.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/xap/1.0/
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/pdf/1.3/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off00000328.bin` `c7a40ada0104b367f9983576da8df7a17cb173ffc356d7d846ae5951537aaa9e`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x328	2450 bytes
`objstm_0024_00.bin` `6b9f377573e4fa5247bf66a9cd1fb204a20b8738d51c74c3c9889c29408a04d8`	pdf-objstm-decoded	PDF /ObjStm 24 0 obj (inflated)	512 bytes

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