PDF malware analysis — malicious · 5143771bfd1b48dc

MALICIOUS

PDF

2.2 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 55f35802493b4f33fd28bc1c33294f8d SHA-1: 4ffe4da74e9cc15a2b64086cccd9b08b7f151eda SHA-256: 5143771bfd1b48dccaaf9c224d8a873f05276e8abf5ef8262a413a18a8b18be9

196 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript triggered by the OpenAction, exploiting CVE-2009-0927 via a Collab.getIcon call. The JavaScript stream is obfuscated and likely intended to download and execute a second-stage payload. The presence of JavaScript actions and an unescape call strongly suggests an exploit attempt.

Heuristics 6

Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (matched in decompressed stream)
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Suspicious extracted artifact high 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_obj0013_001.js` `e4b3ab683dfe7c3506b4cfe47e0c98384fadf0614258abc904e7e63a3a305bd8`	pdf-javascript-stream	PDF /JS object 13 at offset 0x36C	2057 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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