PDF / .TXT malware analysis — malicious · 8e9c33c3f9d91a82

MALICIOUS

PDF / .TXT

3.4 KB Authoring application: Python PDF Library 055 http072057057pybrary056net057pyPdf057

MD5: 106ca319f7a87d511347e0f479901b59 SHA-1: d565d0a6a2104480b6a90ad139c1c2b40e9df0f1 SHA-256: 8e9c33c3f9d91a82ea746f4a157ce50854ccdf2f8901e933d24bec81713f4d94

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1059.007 Command and Scripting Interpreter: JavaScript

The PDF sample contains embedded JavaScript, which is obfuscated and utilizes the unescape() function. A critical heuristic firing indicates exploitation of CVE-2009-0927 via the Collab.getIcon method. This suggests the primary intent is to leverage this vulnerability to execute malicious JavaScript, likely for further payload delivery or exploitation.

Heuristics 5

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)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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.
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_obj0007_000.js` `4709d8a8f5d9fda0f984a1bc5caf6bb40a87a7ed268e6d3f75b51e5bdf32c2c9`	pdf-javascript-stream	PDF /JS object 7 at offset 0x2B9	5476 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s).

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