PDF malware analysis — malicious · 39ec7851f3ffc0a3

MALICIOUS

PDF

30.5 KB

MD5: a0d5da791e427c667f152273c87de35f SHA-1: ba61555a89b043abbf1b5f12bb3e18b5d3d5c9a1 SHA-256: 39ec7851f3ffc0a31d6170cc04ff13ec9c98a7fdae4b36a667d2b39f395ecd45

226 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

This PDF file contains embedded JavaScript that utilizes an eval() call, indicating an attempt to execute arbitrary code. The JavaScript stream is associated with a RichMedia (Flash) object, which is also embedded. ClamAV detections of 'Pdf.Exploit.Agent-35955' on both the main file and an extracted artifact confirm its malicious nature. The primary attack vector appears to be exploiting a PDF vulnerability to load and execute the embedded Flash content.

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
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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
`LcnYrTqWqhZuyOC.swf` `c2b666a3ef4c191b77b78c037656e50477b8ba3d35fd61ae843a3a1f4d41c5c1`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x100F	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` `383281c9e86acbcbd04809f9d0db39cfd076a6d2eae307278e91da0cffa357eb`	pdf-javascript-stream	PDF /JS object 6 at offset 0x13C	2751 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.