PDF malware analysis — malicious · ba7bdc8e3b4b3afa

MALICIOUS

PDF

7.7 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 8623393bcced9291f5782468cc27d146 SHA-1: a3e42423d382f8654188cd17f2588e584d2837c3 SHA-256: ba7bdc8e3b4b3afac553461a0e258544cc4ec1d215e3d8a6815ba3782b0be860

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical heuristic, PDF_EVAL, points to the use of eval() for code execution. ClamAV detection as 'Pdf.Exploit.Agent-35587' further confirms its malicious nature. The embedded JavaScript, despite obfuscation, likely facilitates the download and execution of a secondary payload, a common technique for this type of exploit.

Heuristics 6

ClamAV: Pdf.Exploit.Agent-35587 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35587
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.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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.
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
`javascript_obj0013_001.js` `b31169a6d3296d52a074fd97759e655707723b1533b51b2c026d0269124c0a96`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3DA	6200 bytes
Detection ClamAV: Pdf.Exploit.Agent-35587 Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s).

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