PDF malware analysis — malicious · 25c6e8d832e9071c

MALICIOUS

PDF

12.4 KB

MD5: 2da52c2d15eb55dadee6140691053714 SHA-1: 829882ed7ebc3be520dff37b3bffd605b91d27bf SHA-256: 25c6e8d832e9071c0afb1158abacb50e4ebbaf4a50bad114157a58c45e6e64e8

120 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript, identified as a stager, which is obfuscated and hex-decoded. This script is designed to be executed via the CVE-2007-5659 vulnerability (Collab.collectEmailInfo). The primary function of the script appears to be downloading and executing a second-stage payload, as indicated by the stager nature and the presence of obfuscated code. The attack pattern involves luring the user into opening a malicious PDF that leverages a known vulnerability to run arbitrary code.

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` `0df291d69669aabea8d48539ff6e3447b14e49a861871000e6476334f075bd19`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A6	1011 bytes
`annotation_subject_callee_hex_stage_000.js` `5f1f1d7930f11c58b9c6c4ca3ea5e2ff3a28a42ea934e866d9c137bc91778f90`	deobfuscated-js	annotation-subject callee-key decoded JavaScript at offset 0x14F	5168 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.