PDF malware analysis — malicious · dd519ecc352253f6

MALICIOUS

PDF

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

MD5: 87139067639698ee55170105b49c3093 SHA-1: 4dd5ed56ab0909fd2bf1aa67994f4df08247a9f6 SHA-256: dd519ecc352253f619420a24025a48fb2d2d03c6c696f63f2bd4e92c55b8c482

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, PDF_JS, and PDF_EVAL. The critical ClamAV detection 'Pdf.Exploit.Agent-35587' confirms its malicious nature. The embedded JavaScript, specifically the eval() calls, is likely responsible for executing the exploit, leading to the detection. The reconstructed string from the DOC BODY, 'Math.ceil(b7ySsbaU/IneS7Rbv3' and 'Math.min(b7ySsbaU,IneS7Rbv3', suggests obfuscated code execution within the PDF.

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` `b360284d1d5aa93b513bfc1cbfc77fe5ac53c16d5db4a717094ff77b5ca0c959`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3DE	5797 bytes
Detection ClamAV: Pdf.Exploit.Agent-35587 Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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