PDF malware analysis — malicious · 8f2a8c26c3ce1eb2

MALICIOUS

PDF

10.6 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 2c2181da3efbadc1b85764b67d653741 SHA-1: b7350679a21781dface317662e4e3d2f6f5e44c5 SHA-256: 8f2a8c26c3ce1eb23f9bff543ef114a6a91f8408aaf6400411acc8e367341b0c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, identifying it as 'Pdf.Dropper.Agent-7282068-0'. Static analysis revealed embedded JavaScript with obfuscated code, including an `eval()` call, indicating an attempt to hide malicious functionality. This JavaScript is likely responsible for downloading and executing a secondary payload. The presence of PDF-specific JavaScript actions and streams further supports this conclusion.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Dropper.Agent-7282068-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7282068-0
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_000.js` `0c44fe1c7ab576e4d3207bc8b334c22cfaa557c0aa527b0131ffd9c8fa06a08d`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	9307 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 16 long base64-like blob(s).

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