PDF malware analysis — malicious · 15d94bc9c265b55e

MALICIOUS

PDF

15.4 KB

MD5: 86e9f58df8b3238ccb9c3b50c463f493 SHA-1: 2a3716268b7f909d0eeb295c0ece221dcf33db63 SHA-256: 15d94bc9c265b55ef7abac7599ba1a9d8401456d57f22affe993e4d1cdba889d

114 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File

The PDF file contains embedded JavaScript and a Flash object, indicating an attempt to exploit vulnerabilities. The JavaScript stream, named 'javascript_obj0017_000.js', was found to contain obfuscated code utilizing String.fromCharCode and eval() calls, typical of malware downloaders. The presence of an embedded SWF file ('exploit.swf') further suggests a multi-stage attack. The primary intent appears to be the execution of arbitrary code via the embedded scripts and rich media.

Heuristics 7

RichMedia (Flash) high PDF_RICHMEDIA

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

eval() found — commonly used for obfuscated exploit execution
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.
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` `0583cd0a2d7d4e4b13ff34964d66528225993d8f874d641c12b95c6654b9aabc`	pdf-javascript-stream	PDF /JS object 17 at offset 0x5EB	9973 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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