PDF malware analysis — malicious · f761a851ad319006

MALICIOUS

PDF

32.0 KB

MD5: e02814d71b5fd5e665dd62f2a39036e5 SHA-1: c76a219303cc57516fc8170b4574a29faf72e96c SHA-256: f761a851ad31900625dbb53d4199bdf2c9f1dab3bff98cb7dfabac0a21689b44

216 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

This PDF file was flagged by multiple high-severity heuristics and ClamAV as malicious, specifically detecting an exploit related to embedded content. The presence of embedded JavaScript and RichMedia (Flash) further supports this, indicating an attempt to exploit vulnerabilities within the PDF reader. The extracted artifact 'UgkpiRZRj.swf' is likely the payload or exploit component.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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
`UgkpiRZRj.swf` `c2b666a3ef4c191b77b78c037656e50477b8ba3d35fd61ae843a3a1f4d41c5c1`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x15F3	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` `c3eb68913e61eed60e2768695d29556d7f54462213125bb2868d0e6c08fcf319`	pdf-javascript-stream	PDF /JS object 6 at offset 0x140	3894 bytes

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