PDF malware analysis — malicious · d68b3b17de00dc0a

MALICIOUS

PDF

28.1 KB

MD5: ff112ca0bfb71deb791d9dfbe6633d15 SHA-1: 6cac4f14e0007413cc8930c68a1b879bb90beb62 SHA-256: d68b3b17de00dc0a0a4aad5c71f500cfbf3a10385914108cea4fc58d7f3e00e3

216 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1559.002 Component Object Model Hijacking

The PDF file was flagged by ClamAV as Pdf.Exploit.Agent-35955 and contains embedded JavaScript and a Flash object. The ML classifier also strongly indicated maliciousness. The presence of these embedded components suggests an attempt to exploit vulnerabilities or download further malicious content. The extracted artifact KCnLQjRpJRc.swf is likely part of the exploit chain.

Machine Learning

Nyx PDF Classifier malicious score 0.9989

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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`KCnLQjRpJRc.swf` `c2b666a3ef4c191b77b78c037656e50477b8ba3d35fd61ae843a3a1f4d41c5c1`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x651	26774 bytes
Detection ClamAV: Pdf.Exploit.Agent-35955 Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.

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