PDF malware analysis — malicious · a2928d535bd1d00c

MALICIOUS

PDF

7.0 KB

MD5: 7d9ad38b79a68518b08b47b2e462d475 SHA-1: 292a7e17272333acb2d23c39c7a77c7df3ad8fda SHA-256: a2928d535bd1d00c4ba52baa1445ca654410a41270455e52a3a354d1399e7fd7

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.001 Malicious Link/Object

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical finding is the exploitation of CVE-2009-0927 via a Collab.getIcon call, suggesting a known vulnerability is being leveraged. The unescape() function call further points to obfuscated JavaScript intended to download and execute a second-stage payload. The presence of a suspicious extracted JavaScript file (javascript_obj0006_000.js) reinforces this assessment.

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)
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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_obj0006_000.js` `31835bdb2a4e8a5a784b6d2ca28690f6e6cc1f5c68b8325b6f8efb5600b9d132`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1AB	5914 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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