PDF malware analysis — malicious · a84cda73ce64277b

MALICIOUS

PDF

2.9 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 8758bfeea549915df6f84b695ac931e5 SHA-1: 2ad2fdc60a3a8ea2970c9fda903f4cb9d00dc866 SHA-256: a84cda73ce64277b4779cc1497411b21db78828b8915a1997c5ccbb92f695bd0

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious Link

The PDF file contains embedded JavaScript that utilizes the `Collab.collectEmailInfo` method, which is known to be vulnerable to CVE-2007-5659. This exploit is designed to execute arbitrary JavaScript, likely to download and run a second-stage payload. The presence of obfuscated JavaScript and the specific exploit firing strongly indicate malicious intent.

Heuristics 5

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.
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_obj0013_000.js` `c422d96f486213b28d62e151253ed2cde19313b2d79892290b8ae34df1c6f3e1`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3CE	3595 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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