PDF malware analysis — malicious · 06be208717f4dcc1

MALICIOUS

PDF

3.5 KB

MD5: d6e6de1e77a812beaa98de9ed4fbdd24 SHA-1: 5dcfb326619dca6c1e0fdb4191ce3fd2056aad99 SHA-256: 06be208717f4dcc10836d3687a8f83712f83eebf399ec0602aa42028ea4a53b4

196 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript that utilizes the unescape function, a common indicator of exploit code. The script appears to be designed to download and execute a secondary payload, as suggested by the ML classifier and the presence of an embedded SWF file. The obfuscated nature of the JavaScript and the use of unescape() make it difficult to determine the exact payload, but the overall intent is malicious.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 7

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.
RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`exploit.swf` `09da31fcb002129249bb529a7f84709739a96f62781db5f4c6d9bf6e4308eb15`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x4D1	102 bytes
`javascript_obj0017_000.js` `6aeba6f2a17f7818058de1e93c5241a84ae97b0aa2902865f925003bb3d25fdb`	pdf-javascript-stream	PDF /JS object 17 at offset 0x5EB	1557 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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