PDF malware analysis — malicious · b1ebd3f7dc8f5790

MALICIOUS

PDF

27.5 KB Created: 2010-03-14 22:18:33 Authoring application: Lw0Fk (via Gx7UpJk)

MD5: 4303762e3b03fc0be0d96aeac4f18ca6 SHA-1: c38ab8c6e370a2d3ec6631dcac5fb8d1e13802d1 SHA-256: b1ebd3f7dc8f57906f54c004fcf13c8158a3ff76e71969054756b14935603fd7

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/Shell Script Execution: JavaScript Execution T1204.002 Malicious File: User Execution: Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_EVAL heuristic firing suggests the JavaScript is being used to execute arbitrary code, likely to download and run a secondary payload. The extracted artifact 'javascript_obj0007_000.js' is also suspicious. The document body is unreadable, but the presence of JavaScript and the high unknown exploit score point towards a malicious exploit delivery.

Heuristics 5

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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape 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` `fd17a4e0747e38bb1c8cdbf738d2448fc4dd8179272bf16c62fa3c6a20a47995`	pdf-javascript-stream	PDF /JS object 7 at offset 0x23C	27003 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.