PDF malware analysis — malicious · aed6bb4969e259da

MALICIOUS

PDF

79.3 KB Created: 2009-08-25 16:07:23 Authoring application: Scribus 1.3.3.13 (via Scribus PDF Library 1.3.3.13)

MD5: beb0f2dfcb5212f1565838a918281abf SHA-1: 5d091c1075efb6c55935434ec649a0238113c678 SHA-256: aed6bb4969e259da157cf152e28c69c5f10ac9017307456238209f879b483096

150 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, including a stream flagged for eval() calls and obfuscation indicators. ClamAV identified this as Pdf.Exploit.Agent-22545, indicating a known exploit. The ML classifier also strongly flagged it as malicious. The primary attack vector appears to be leveraging JavaScript to execute malicious code, likely for downloading and running a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9593

Heuristics 6

ClamAV: Pdf.Exploit.Agent-22545 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-22545
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.
PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LURE

PDF has 1 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0065_000.js` `8ff6f8c9dbed73d6ad5bcf8215843d50cebdcc8ec3cec3794ae7c59466ea509d`	pdf-javascript-stream	PDF /JS object 65 at offset 0x109E2	85 bytes
`javascript_obj0066_001.js` `8de6332f825b22013913a2606a9a33fa2b698e8d2bc33f1a9c571fc53614ca1b`	pdf-javascript-stream	PDF /JS object 66 at offset 0x10A77	22721 bytes
`javascript_obj0067_002.js` `8ee5a20a4376a4c2f8050369b5a0bd3cbaa2dac7faa9481aa877e911302c273b`	pdf-javascript-stream	PDF /JS object 67 at offset 0x1346C	259 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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