PDF malware analysis — malicious · 9a80d4f9adef0b6a

MALICIOUS

PDF

11.7 KB

MD5: d02fb168961c150710038abbca32e4d2 SHA-1: 2ebf65c51727a163b8f8861cd9b3387c7ba02ce8 SHA-256: 9a80d4f9adef0b6a520f2b39997b42e44c3de72ff938c4b546060682cfbcdabd

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The critical heuristic CVE_2007_5659 indicates the exploitation of a PDF vulnerability using JavaScript. The embedded JavaScript streams, particularly legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, are likely responsible for executing the exploit. ClamAV detection as Pdf.Exploit.Agent-36065 further confirms the malicious nature. The overall intent appears to be the execution of arbitrary code, likely for downloading and running additional malware.

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` `cdd7f8c3f202ca92d6736750fe059bab4ac40a0c1f9ed00c1b5f40c8708d6c5b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12126 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `c8c6a36a4622b4489a314c1d5377d9d29aba614ad79aea4464dbd669a3dd48e8`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4955 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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