PDF malware analysis — malicious · b6c20afe2c645e16

MALICIOUS

PDF

11.8 KB

MD5: df82657c5896b2262ac40815aff0c2e8 SHA-1: 11649f94d55197344fd43195a7d4356e92a715cc SHA-256: b6c20afe2c645e1621aea86b2c4804bbe4d2a399e4dc217ff2db8e8effbbe5b6

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, triggered by an annotation subject, which is a known technique for exploiting CVE-2007-5659. The critical heuristic 'CVE_2007_5659: Collab.collectEmailInfo' confirms this. The embedded JavaScript, named 'annotation_subject_callee_hex_stage_000.js', is likely responsible for downloading and executing a second-stage payload. The document body is unreadable, but the presence of the exploit and stager indicates a malicious intent to compromise the user's system.

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` `c3990ca8aaed9df09880f5e6cb6722b89a334d9ee1f82e3c974b09dbf0c11147`	deobfuscated-js	annotation-subject callee-key decoded JavaScript at offset 0x14F	5192 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.