PDF malware analysis — malicious · d36efe5ab1202596

MALICIOUS

PDF

45.4 KB

MD5: 2a86ee90c7756f1b4af1e6c2dad47f2c SHA-1: efaca9bdbe17453ba4b761a62ee5c6fbcdb2b148 SHA-256: d36efe5ab1202596ebfd11f59f8d277238cb8f895594254b00fb53112e4d8fce

166 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript, triggered by the CVE-2007-5659 vulnerability related to `collab.collectEmailInfo`. The heuristics indicate that this JavaScript acts as a stager, decoding and executing further malicious content. The presence of U3D content also suggests an exploit attempt. The primary attack vector appears to be exploiting a known Adobe Reader vulnerability to achieve arbitrary code execution.

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. (identified after JavaScript deobfuscation)
U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED

PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
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.
syncAnnotScan annotation-staging primitive low PDF_FOXIT_SYNCANNOTSCAN

PDF JavaScript calls syncAnnotScan() — a no-op annotation-enumeration primitive used by exploit-kit JavaScript to stage payload reads from annotation /Subject fields before eval(). Not a vulnerable sink itself; rarely seen in legitimate PDFs. (matched in decompressed stream)
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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0009_000.js` `795764f2f24cd6e151be2c66ff2ec93437966e9bc41fccc1ca87acf4c2298a5e`	pdf-javascript-stream	PDF /JS object 9 at offset 0x4726	498 bytes
`annotation_subject_callee_hex_stage_000.js` `3d45aef3d26b26556cce112c049a6a98186b5ca516ab4f6a3cbaf4b25f7eaa0b`	deobfuscated-js	annotation-subject callee-key decoded JavaScript at offset 0x1C53	5707 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`deobfuscated.js` `6b903c59791b7976eb128d58e2eb42fc5fa43aab69de94adf5b390467f7a2ad9`	deobfuscated-js	PDF JavaScript deobfuscation pass	315307 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`u3d_00_off0000495c.bin` `a96e1fca2499edf504d3934052ca1fc338d4b4898a65e6a361937ed1ba0dc0fe`	pdf-3d-stream	PDF U3D 3D stream at offset 0x495C	28021 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.79, consistent with packed or encrypted content.

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