PDF malware analysis — malicious · b9a39d2fc6a2ab62

MALICIOUS

PDF

12.1 KB

MD5: bc347a11344acf4bae8ab458c59b08d7 SHA-1: a9da7f43ee282c55eeaf6daf7d344f3d60b3fe35 SHA-256: b9a39d2fc6a2ab62bf94f5e13fd124d3d2adf844e0bfe33792d54a4a9697e67e

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains embedded JavaScript, specifically identified as a stager exploiting CVE-2007-5659 (Collab.collectEmailInfo). This exploit is designed to execute arbitrary code, likely to download and run a second-stage payload. The presence of this known exploit and the detection by ClamAV as Pdf.Exploit.Agent-36179 strongly indicate malicious intent.

Heuristics 6

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)
ClamAV: Pdf.Exploit.Agent-36179 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36179
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` `e89d7054d228dd0d7d4de9a02d1607a443ba297f326673115b5825c1b6cb184a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A6	823 bytes
`annotation_subject_callee_hex_stage_000.js` `afe12e47abb5e0d477f94f52c9d411bf869b664f28e625b9ae71fa7fb93f1e8f`	deobfuscated-js	annotation-subject callee-key decoded JavaScript at offset 0x14F	5261 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.