PDF malware analysis — malicious · 309186e8bc04610e

MALICIOUS

PDF

7.7 KB Created: 2009-12-03 19:42:88 Authoring application: PDF Library 7.3.3 (via PDF Library 1.6.9)

MD5: d465105935369e96e815ada9606e29af SHA-1: a8807ab5c90746799a22715060e2ed3e75dc2edf SHA-256: 309186e8bc04610ed62864009e626b7bf9b4dc9c767b895efa20e0d8a92f6500

146 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF was flagged by a machine learning classifier and ClamAV as malicious. Heuristics indicate the presence of embedded JavaScript and the use of ASCIIHexDecode filters, suggesting an attempt to obfuscate malicious content. The embedded JavaScript is likely responsible for executing arbitrary code, as indicated by the 'PDF_JAVASCRIPT' and 'PDF_JS' firings. The ClamAV detection name 'Pdf.Dropper.Agent-7245772-0' further supports its role as a dropper.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Dropper.Agent-7245772-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7245772-0
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `3d721e8d6fc473fcc1800b485dd0eaccb0e6b1f04b5084ff5b0989546c8677a1`	pdf-javascript-stream	PDF /JS object 7 at offset 0x268	37641 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long hex-escaped blob(s).

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