PDF malware analysis — malicious · 5903b673f1c5c79d

MALICIOUS

PDF

2.8 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: ddb3aacdba955357289e1e471c5d79f9 SHA-1: 69893c0c564a408b9b250f2126eff43dbe7ae2a8 SHA-256: 5903b673f1c5c79d480730978f81cb530a5947d2cd0a3aa02a1f41171bfacb77

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and triggers an OpenAction, indicating an attempt to execute code upon opening. The critical CVE-2007-5659 heuristic firing specifically points to the use of Collab.collectEmailInfo, a known vector for exploiting vulnerabilities in older Adobe Reader versions. The embedded JavaScript, identified as 'javascript_obj0013_001.js', likely contains obfuscated code designed to leverage this vulnerability, potentially leading to the download and execution of a second-stage 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)
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)
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_001.js` `35ba768763558049a4446a49d0b4d15f4779f98cf3d8fb3963ba634decd0ff1d`	pdf-javascript-stream	PDF /JS object 13 at offset 0x365	2780 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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