PDF / .HTM malware analysis — malicious · d63226affb18ee2a

MALICIOUS

PDF / .HTM

31.9 KB

MD5: 8dc4e674fa3186a550930bc4bacce414 SHA-1: e417fca453d3d76d929bb9f855799acb741d9519 SHA-256: d63226affb18ee2a93bdccdbe7abcd266027598c8b1dfa0df8eadde666b99ad9

186 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.007 JavaScript

The PDF file contains embedded JavaScript and a Flash object (SWF), as indicated by the PDF_JAVASCRIPT, PDF_JS, and PDF_RICHMEDIA heuristics. ClamAV detection confirms this as a malicious PDF exploit (Pdf.Exploit.Agent-35955). The embedded SWF file, named sUwscDiwDPwwR.swf, is likely responsible for executing the primary malicious payload. The JavaScript stream is the likely vector for initiating the exploit chain.

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
`sUwscDiwDPwwR.swf` `c2b666a3ef4c191b77b78c037656e50477b8ba3d35fd61ae843a3a1f4d41c5c1`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x1546	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` `6c571709ca6773184ebc97242f60800d96f59bce1db803557f290250829a1ea4`	pdf-javascript-stream	PDF /JS object 6 at offset 0x13C	3633 bytes

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