PDF malware analysis — malicious · fed337177ca91873

MALICIOUS

PDF

38.3 KB

MD5: 8806185d494efcaa7fdfbedd1136662b SHA-1: 040c48b8ce182b76b8f6ffd6a5d9d2a3550c3617 SHA-256: fed337177ca91873134cd1b2c906329ab1cc9fe6ce5cf89cf2ddaa214173aca7

94 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment

The PDF file exhibits multiple indicators of malicious intent, including embedded JavaScript and Flash content. The presence of a JavaScript stream and embedded files, coupled with heuristics for JavaScript actions and exploit indicators, suggests an attempt to execute malicious code. The extracted JavaScript file, 'javascript_obj0006_000.js', is a key artifact that likely contains the malicious payload or exploit code. The overall structure points towards a delivery mechanism for further compromise.

Heuristics 7

RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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
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. (matched inside decoded stream)
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
`Adobe.swf` `ce5f7936cf8e3536a88a804ce2d6902022df1794fa878bdc64a26866e34ba989`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0xD45	55839 bytes
`javascript_obj0006_000.js` `d1a89ceca75ba2234758a99e3890c6febeca2e13f96d1e2e23b639ad5bf8cc8c`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF5	2632 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.