PDF malware analysis — malicious · 41b3df51b8cfd2ac

MALICIOUS

PDF

3.2 KB

MD5: 4ab8523de3996a095b6712c8778d357a SHA-1: 7d819a513e1f73fbe70dc641960c7fcf27db51b9 SHA-256: 41b3df51b8cfd2ac9ea8b0b991f5682888305c4ec27c3a72d570d05dba31bd1f

196 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.001 PowerShell T1059.007 JavaScript/VBScript

The PDF file contains embedded JavaScript and is configured with an OpenAction to trigger execution upon opening. The critical CVE-2009-0927 heuristic firing indicates exploitation of a known vulnerability via the Collab.getIcon method. An embedded JavaScript file was also extracted, suggesting the document's primary purpose is to exploit this vulnerability to download and execute a second-stage payload.

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_obj0009_000.js` `c6d2e8b36f198537cd05af34a5ae89363fa8524b1d5f92b9236a96c2d5ea5cdb`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	2392 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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