PDF malware analysis — malicious · 3541bd3a9dec430c

MALICIOUS

PDF

3.0 KB

MD5: 1136ec4b71b95bd74aa70ad856cb4f50 SHA-1: 6f8340548e0988a51e5b3be9ae4be4470bc81799 SHA-256: 3541bd3a9dec430c2997c5a4638eb8799f28df9b6490a3082dc7c36261d8fbda

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.001 Malicious Link

The PDF file contains embedded JavaScript and is configured with an OpenAction to trigger execution upon opening. The critical CVE-2009-0927 heuristic indicates the use of the Collab.getIcon method, a known vector for exploiting this vulnerability. The embedded JavaScript stream, identified as 'javascript_obj0009_000.js', likely contains obfuscated code designed to download and execute a secondary payload, although its exact function is obscured. The unescape() call further suggests code obfuscation.

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)
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_obj0009_000.js` `2245276d520ca4cd9d06eff7d2c4a5b93ff422eaa7077882545776628dafa748`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	2217 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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