PDF malware analysis — malicious · c0c343f009c22bb2

MALICIOUS

PDF

6.6 KB

MD5: 3228f2e863a9db69e343a2c37944efdf SHA-1: 9e9608776564d537586ebf4409a1f27ce7cd4172 SHA-256: c0c343f009c22bb2a7ea2c38bf2ceb1c60a7812637e56f8f5f8085e22f51a3a3

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_UNESCAPE and PDF_FILTER_HEX rules suggest obfuscation and potential exploit activity. Crucially, the CVE_2007_5659 heuristic firing points to the use of the Collab.collectEmailInfo method, a known vector for exploiting this vulnerability. The embedded JavaScript file, javascript_obj0006_000.js, is likely responsible for executing the exploit and downloading a secondary payload.

Heuristics 6

Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (matched in decompressed stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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` `654dd285885fa24faa7b808cef0da570eacc9910e96cd029939073751beddcbc`	pdf-javascript-stream	PDF /JS object 6 at offset 0x205	5713 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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