PDF malware analysis — malicious · b68ff948eb4dc665

MALICIOUS

PDF

31.9 KB

MD5: 1291b5f10ad8ce2229c8d058d9959181 SHA-1: d71cb091ef7f9a28cbf46450c133d3e3dbe58c34 SHA-256: b68ff948eb4dc6654da9b1f4e9d58ea7697cc533204f3c98d0dd83fcaa36eff0

186 Risk Score

Malware Insights

MITRE ATT&CK

T1559.002 Component Object Model Hijacking T1204.002 Malicious File

The PDF file contains embedded JavaScript and RichMedia (Flash) content, triggering critical ClamAV detections for 'Pdf.Exploit.Agent-35955'. The presence of these elements strongly suggests an exploit attempt designed to compromise the user's system. The embedded JavaScript and Flash are likely used to deliver a secondary payload or exploit a known vulnerability.

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 0x1595	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` `b959ccc52aa74a6f1c6d1e69f52f88fc8a6570ffea9875bcd140a75bfec970f1`	pdf-javascript-stream	PDF /JS object 6 at offset 0x144	3831 bytes

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