PDF malware analysis — malicious · e2a2071e3387c795

MALICIOUS

PDF

31.5 KB

MD5: c8aee4d6fb7dc8221b9f0b7051b62b83 SHA-1: 10fcc18a7823a0433f5b1ae078a284ec995c804c SHA-256: e2a2071e3387c7954fc4a10f1faf695bbee4efc5e58d7788613d527395910576

226 Risk Score

Malware Insights

MITRE ATT&CK

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

This PDF file contains embedded JavaScript and a Flash object, as indicated by the PDF_JAVASCRIPT, PDF_JS, PDF_RICHMEDIA, and PDF_UNESCAPE heuristics. The ClamAV detection 'Pdf.Exploit.Agent-35955' strongly suggests exploitation of a known PDF vulnerability. The embedded JavaScript and Flash file ('qWyXieCLBN.swf' and 'javascript_obj0006_000.js') are likely components of a multi-stage attack designed to download and execute further malicious code.

Heuristics 8

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
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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
`qWyXieCLBN.swf` `c2b666a3ef4c191b77b78c037656e50477b8ba3d35fd61ae843a3a1f4d41c5c1`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x13F9	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` `d4b33e03a3271a8efbc06f1478de9a06f675785acd648d6cef032269fe01519f`	pdf-javascript-stream	PDF /JS object 6 at offset 0x146	3419 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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