PDF malware analysis — malicious · f309abc4a4d1b075

MALICIOUS

PDF

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

MD5: 27362b8971323d76477f42531b711fc2 SHA-1: e0bc15380c02d088f15427f658c4e2c1b5748bdc SHA-256: f309abc4a4d1b075f4184842d9346fcb7bd181a137a4106f24b852bcad03269b

220 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that is triggered by the OpenAction feature. The critical CVE-2007-5659 heuristic indicates the use of the Collab.collectEmailInfo method, a known vector for exploiting Adobe Reader vulnerabilities. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, as suggested by the ClamAV detection of Win.Trojan.Agent-34667. The presence of JavaScript actions and unescape calls further supports the exploitation of a vulnerability.

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: Win.Trojan.Agent-34667 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Agent-34667
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` `839162dd355a64f13928ffae03d49eb2e846aa365530deea1f1b57a54c1a8a62`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	2653 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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