PDF malware analysis — malicious · ea4c10c439d0b08e

MALICIOUS

PDF

32.6 KB

MD5: 1bbb22902e2cce1261d0f1d2fdb10ecc SHA-1: 8447cc87c1c5072181a107814e86a808bb25666c SHA-256: ea4c10c439d0b08e60e02b26e0fe8a144b8e77fef9ed2bd0abed4c95b578f15f

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains embedded JavaScript and a RichMedia (Flash) object, which are commonly used to exploit vulnerabilities. ClamAV detection as 'Pdf.Exploit.Agent-35955' strongly suggests an exploit is present. The embedded JavaScript and Flash object likely work in conjunction to download and execute a second-stage payload.

Heuristics 7

ClamAV: Pdf.Exploit.Agent-35955 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35955
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
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
`embedded_file_obj0016.bin` `c2b666a3ef4c191b77b78c037656e50477b8ba3d35fd61ae843a3a1f4d41c5c1`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x183A	26774 bytes
Detection ClamAV: Pdf.Exploit.Agent-35955 Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.
`javascript_obj0006_000.js` `1dc9010a2bc62396451cf309ddf5177f8ecf28330bae732e146a75032671f48f`	pdf-javascript-stream	PDF /JS object 6 at offset 0x140	4310 bytes

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