PDF malware analysis — malicious · 1eb95413a07bc689

MALICIOUS

PDF

2.7 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: df85ab8edf696e709a389700cfb0c49d SHA-1: 98108e959aaf6664d5a82948e5038680c57f70ea SHA-256: 1eb95413a07bc689d57663963bc2aa196adeb7de39252c600c287780038010eb

280 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 automatically execute code upon opening. Critical heuristics identified exploits for CVE-2007-5659 (Collab.collectEmailInfo) and CVE-2008-2992 (util.printf), which are commonly used to achieve arbitrary code execution within PDF viewers. The ClamAV detection as Win.Trojan.Agent-36168 further supports the malicious nature of the file. The embedded JavaScript stream, although not fully detailed, is likely responsible for leveraging these vulnerabilities to download and execute a secondary payload.

Heuristics 8

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)
util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (matched in decompressed stream)
ClamAV: Win.Trojan.Agent-36168 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Agent-36168
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` `93b8904be85c3127ae44671a2fe66e1b7627903332f4098edb967da6189b889c`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3FD	3181 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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