PDF malware analysis — malicious · cf4ee86306326877

MALICIOUS

PDF

11.9 KB

MD5: d0b6498082d5c3bc32d9d9237457631e SHA-1: d6e1a5e5efc4f28214704bc81f44c13c46bb4d7a SHA-256: cf4ee86306326877a51b20b5dac4b8b9c4c0509dd9c53ffc0ec9796e062b63d1

146 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that exploits CVE-2007-5659, specifically targeting the Collab.collectEmailInfo function. The heuristics indicate that this JavaScript is responsible for downloading and executing a secondary stage payload. The presence of deobfuscated JavaScript files further supports this. The ClamAV detection name 'Pdf.Exploit.Agent-35903' also points to a known exploit.

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-35903 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35903
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `860eae5f96eb426380281c575a089242b50523bbb4bbb8dd765e582cd9c07d2e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	294 bytes
`legacy_pdfkit_stage_000.js` `8c3776aeab21119c375c052e28f2afa41526ace09a0195ab0b6a10fc86a9b6aa`	deobfuscated-js	z-percent hex-pair decoded JavaScript at offset 0x2E8	5003 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `192d53f561d4b676295a1485a5a6b66224fd10219d7bc8f8372b867c8e71897a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2E8	12052 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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