PDF malware analysis — malicious · d7c6fa207925630f

MALICIOUS

PDF

9.3 KB

MD5: e06f9f22b4c936e9152e40b94a9a114b SHA-1: b11b4f05091b227b6998bf8a29fc4fc73d481a7a SHA-256: d7c6fa207925630f189fe2733fbc9519361822f95a1bdc7b425b36604171b4c5

178 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a PDF containing embedded JavaScript, which is flagged by multiple heuristics. Specifically, the CVE-2007-5659 exploit targeting `Collab.collectEmailInfo` is present, indicating an attempt to leverage a known PDF vulnerability. The presence of multiple JavaScript streams and deobfuscated JS files suggests the script is designed to download and execute a second-stage payload. ClamAV also detected this as `Pdf.Exploit.Agent-35905`.

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` `12ed97098e005b1bd924808673984df54225dc9c9495d34240fbfa9f2273da03`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	11834 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` `13cfab5529f83e306ed0ad0978020de9ea0dc70f50fca0117cbc2ee6b1a53e0c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	4989 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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