PDF malware analysis — malicious · dc31ecedb8f65352

MALICIOUS

PDF

3.6 KB

MD5: 46921df7e96fbaec90a62acaf86e9458 SHA-1: 84001125c3eaaea5372a6dbf21b2790907b4c43c SHA-256: dc31ecedb8f653526f8f9ff19428e78e6d3958c462c8d42ca6c989f6c08b2a79

106 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript and a Flash object, indicating an attempt to exploit vulnerabilities. The embedded JavaScript stream, named 'javascript_obj0017_000.js', is obfuscated and uses an unescape() call, typical of exploit delivery. The presence of an embedded SWF file ('exploit.swf') further suggests a multi-stage attack. The primary function of the script appears to be downloading and executing a secondary payload, though the exact mechanism is obscured.

Heuristics 6

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` `6b623da6e0763a3ef8fab4c5579f0ec4f2446b96f6c0e0eebf65e7799cd01217`	pdf-javascript-stream	PDF /JS object 17 at offset 0x5EB	1659 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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