PDF malware analysis — malicious · dc8805564a22603d

MALICIOUS

PDF

11.9 KB

MD5: f46652bf6dad0b2493a7fe43fb3d92a2 SHA-1: 45ebb0e75ff8ac717e99262e5948c5d0918026ea SHA-256: dc8805564a22603d7477fa1776a8031f93ace58747d3fea2dc6cd5a24d2ea4ea

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2007_5659 heuristic specifically identifies the use of Collab.collectEmailInfo to execute JavaScript, a known method for exploiting PDF vulnerabilities. The presence of deobfuscated JavaScript files suggests the script's purpose is to download and execute further malicious content. The ClamAV detection further confirms its malicious nature.

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` `36c4d2033042a4c1e6ea2d3630e0626337204bb305affa8201d7f98309d54d33`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12253 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `b53ccc87b70741247a918addbb40001c4b34da051a97cbb59a7bc22a0cccc4ad`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5016 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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