PDF malware analysis — malicious · e020f8b9abdb0265

MALICIOUS

PDF

5.0 KB

MD5: 48016f4907e8717588c40ab05fe56091 SHA-1: bc4428dccdf390622a8ee7ee288aec16e9b57a73 SHA-256: e020f8b9abdb0265f89b1608cec9b8fbec3c3f4653da8b7148961ccdd2bd9022

106 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF file contains embedded JavaScript and a Flash object, both flagged as suspicious. The embedded JavaScript stream, named 'javascript_obj0017_000.js', utilizes the unescape() function, indicating potential obfuscation. The presence of an embedded SWF file ('exploit.swf') further suggests a multi-stage attack. The script's likely intent is to download and execute a second-stage payload, leveraging the embedded Flash object for exploitation.

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` `9b9c21b9e7c2489645f2d8100489597d5459730292cebc9619b96404a112ac80`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x4D4	1503 bytes
`javascript_obj0017_000.js` `5555cc449fff0bc2cc1f6f05865ac41ecb3226d6d0966d7ab8c4dfe9c4e47808`	pdf-javascript-stream	PDF /JS object 17 at offset 0xB67	1697 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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