PDF malware analysis — malicious · e7d54ab0cde6187c

MALICIOUS

PDF

12.0 KB

MD5: e396b1103566c6a61e9ad1ea317dc9af SHA-1: 6bcfca34791aaf37a8f2abccab2788e532c09508 SHA-256: e7d54ab0cde6187ce210084413bbf97359e358b9ad71921125b2233eaf8a3967

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by multiple heuristics and ClamAV detection as Pdf.Exploit.Agent-36065. The critical CVE-2007-5659 heuristic indicates the use of a JavaScript exploit involving the Collab.collectEmailInfo function, which is known to concatenate and evaluate strings to form executable code. This suggests the primary function of the PDF is to exploit this vulnerability to download and execute a second-stage payload.

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)
ClamAV: Pdf.Exploit.Agent-36065 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36065
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` `9c67560e8c63b720885d3efc1627b844b86a6ec08e99e5b65a22eae832045756`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19C	431 bytes
`legacy_pdfkit_stage_000.js` `b76f7c46fd0457c1097d4da43cbc851f2ab8272e55ee589b6eb8223372d3a9b1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12387 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `5339c82530ba17a4572c234f7c8f334831da06e1954c7f20b111bc5277734e81`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5122 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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