PDF malware analysis — malicious · dddafa8da5dbdc05

MALICIOUS

PDF

29.2 KB

MD5: b1e2e95bc5c3165731a3a9dd7046ee7b SHA-1: 5ae6f97512dd301088cc9cd242d2d663cd40df3d SHA-256: dddafa8da5dbdc055cb83fd64f964bd9b0544f6d36d27865532f8b1c7aa966d3

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF file contains embedded JavaScript that utilizes an eval() call, indicating obfuscated code execution. The JavaScript stream is associated with an embedded Flash (SWF) file, which is a common vector for delivering exploits or further malicious content. The ClamAV detection 'Heuristics.PDF.ObfuscatedNameObject' further supports the malicious nature of the file. The primary attack pattern involves leveraging PDF vulnerabilities to execute arbitrary code via JavaScript and Flash.

Heuristics 7

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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
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
`KOuKWkxlCLGrA.swf` `767382813fc770c9716554c3266b22eee1636037ca964af05acf6ff66db4a27d`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x9BF	26993 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.98, consistent with packed or encrypted content.
`javascript_obj0006_000.js` `1582f6bf1de877ce99343c00e7e948c16e35e506da899ab76c39f78419ecec84`	pdf-javascript-stream	PDF /JS object 6 at offset 0x15B	899 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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