PDF malware analysis — malicious · aa386b02c0560202

MALICIOUS

PDF

11.3 KB

MD5: bd3c18e195c8e6b5b2142a90e23a66fd SHA-1: f406b5e46c733435845150ef74f535f250c6fe53 SHA-256: aa386b02c0560202c167180628fbd8cbc91bc9564d0efe79c41a5f37e4095407

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF contains a critical heuristic firing for CVE-2007-5659, indicating the exploitation of the Collab.collectEmailInfo vulnerability. This is further supported by the presence of an embedded and deobfuscated JavaScript stager, 'annotation_subject_callee_hex_stage_000.js'. This script is designed to download and execute a second-stage payload, which is a common technique for initial access and further system compromise.

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. (identified after JavaScript deobfuscation)
Annotation subject callee-key hex JavaScript stager high PDF_ANNOT_SUBJECT_CALLEE_HEX_STAGER

PDF JavaScript uses syncAnnotScan()/getAnnots() to read an indirect annotation /Subject stream, percent-decodes it through marker replacement, then uses a callee.toString()-derived key to decode and eval the final exploit stage.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `83c89bafa116d9c91eff0b9ebda502f5bf0baa04c36fa774c6ebc2756ba3479f`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A6	585 bytes
`annotation_subject_callee_hex_stage_000.js` `ea59a539d843a87d992cf12999ffb717e6554fe00dfe86e964be2514c0ef1b42`	deobfuscated-js	annotation-subject callee-key decoded JavaScript at offset 0x14F	4862 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.