PDF malware analysis — malicious · 90fc52f066358d57

MALICIOUS

PDF

139.8 KB

MD5: 07b6dd1128c5b79becffe83202977710 SHA-1: 8758fa44966c1c88553a93a0f13654a8c88f72c7 SHA-256: 90fc52f066358d578d3dfa92e809bf91ae72d931a8b8ba8265d4fe755d76a29e

226 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript with eval() calls, indicating an attempt to execute malicious code. The ClamAV detection 'Pdf.Exploit.Agent-35955' and the presence of an extracted JavaScript file ('javascript_obj0006_000.js') strongly suggest this is a malicious PDF exploiting a vulnerability. The embedded file ('embedded_file_obj0016.bin') is likely the secondary payload. The script's purpose is to download and execute this payload.

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
`embedded_file_obj0016.bin` `ae13437efad4e3a4f03cb0339d03b7d795966b217d30a540767c4ae26f402285`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x146D	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` `15689f302e582c730e2957af9f693527bed5d4b0c0400330afa9ba85ee307ff3`	pdf-javascript-stream	PDF /JS object 6 at offset 0x13C	12114 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).

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