PDF malware analysis — malicious · c9153db58be5ce75

MALICIOUS

PDF

4.5 KB

MD5: 03e8259134b1fad1aa19f590ab05abcd SHA-1: 9391ca13dcbf09675af0958e6a4e62342c3536b8 SHA-256: c9153db58be5ce75b3a50bdcb6d39d2333a370cc44b6a7dc2027ad357fa5af17

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious Link: Malicious File

This PDF document contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2009_0927 heuristic firing points to the exploitation of a known vulnerability via the Collab.getIcon method. The embedded JavaScript, which is obfuscated, likely serves to download and execute a second-stage payload. The presence of extracted JavaScript files further supports this. The attack pattern is therefore a PDF exploit leveraging JavaScript to deliver further malicious content.

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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `dbb8211ec752a5c7e63ba7da717005e2840a87fb4c28e115218720265f3f182d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x26D	3677 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).
`javascript_obj0007_001.js` `375e835fbc43507c5c16a27bb6d467ce0f589bea3a8b55c91a1042876ca088f2`	pdf-javascript-stream	PDF /JS object 7 at offset 0x26D	3099 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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