PDF malware analysis — malicious · c368d6bf62ebd096

MALICIOUS

PDF

9.6 KB

MD5: 9184e091057cea2c2e1c68a4e86b0137 SHA-1: 39b7cebe0274c3a24f4e0784e8f1fd2dd880317b SHA-256: c368d6bf62ebd0960ba66ae8d5b46a8ec1c2173bafab7704efcfa009c65d6a3f

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.001 Malicious Link T1059.003 Windows Command Shell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. Critical firings for CVE_2007_5659 and ClamAV detection (Pdf.Exploit.Agent-35905) confirm exploitation of a known vulnerability. The JavaScript, though obfuscated, is designed to be decoded and executed, likely to download and run a secondary payload. The presence of multiple extracted JavaScript files further supports this. No specific family could be identified.

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-35905 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35905
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `d8a6b4ad1abf04d0c4a4f89535cfb57f7312edef25c443f4e844c8ec9d0929dd`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	352 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `ea5f2943eb78b888289cf53bfb458771a5a7a7174dff1a06ffa815d8c3747a40`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	12312 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `04784f2494b3dd3f81a95be0607205e2c07d0260d5fde4711a4b0aee7c3705ed`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	5161 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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