PDF malware analysis — malicious · 2128de8814fbfd2d

MALICIOUS

PDF

2.7 KB Created: 2010-14-60 64:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 30370e70ee990c108d1ba38992ce6f6d SHA-1: c6ba95642b23eba8d7eea1f6d7839519896033ab SHA-256: 2128de8814fbfd2d316139dc698ffd6fc448bb19d3056ddb637b2ff22ae87b3c

220 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

This PDF file contains embedded JavaScript that is triggered by the OpenAction feature, indicating an attempt to exploit vulnerabilities. The presence of a CVE-2007-5659 (Collab.collectEmailInfo) firing and the detection by ClamAV as Pdf.Dropper.Agent-7238253-0 strongly suggest malicious intent. The JavaScript stream, named 'javascript_obj0013_001.js', likely downloads and executes a second-stage payload, although its exact functionality is obscured.

Heuristics 7

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)
ClamAV: Pdf.Dropper.Agent-7238253-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7238253-0
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` `d22ef3c5d78d34e808c33d3f537d815f96a4076782b402a2a4b7a9be52e94d3c`	pdf-javascript-stream	PDF /JS object 13 at offset 0x363	3576 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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