PDF malware analysis — malicious · 3887b271db95d223

MALICIOUS

PDF

4.6 KB Created: 2008-04-28 12:17:40 +03:00

MD5: 1d13f29d6f57cec4933a2e0f55f65430 SHA-1: 261e92049c5c0850ca0b34f1fa432c79f2e32f59 SHA-256: 3887b271db95d223f3dbf455b4f53765bdd329f55ced2bc2df6f5436b4598403

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2007-5659 (Collab.collectEmailInfo). The embedded JavaScript, identified as 'javascript_obj0010_000.js', is likely responsible for exploiting this vulnerability. The primary intent appears to be the execution of arbitrary code, potentially leading to the download and execution of further malicious content.

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)
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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_obj0010_000.js` `f5e46d6546b5df6ab1495d6c16c39e2625ed773bd6d6a18ac00e2b27543d5076`	pdf-javascript-stream	PDF /JS object 10 at offset 0x8F1	1914 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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