PDF malware analysis — malicious · b69675985f00e267

MALICIOUS

PDF

12.1 KB

MD5: fead331df7a55dd2d4eedfb2c47a0781 SHA-1: 593e87cba03a37324adb865ccf2f1eeed05d98c4 SHA-256: b69675985f00e267ec124c183ba8f2fc092345b5c12ee9725dd5e1de71e83a3c

138 Risk Score

Malware Insights

MITRE ATT&CK

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

The critical heuristic CVE_2007_5659 indicates the exploitation of a known vulnerability in Adobe Reader using embedded JavaScript. The PDF launcher concatenates and evaluates obfuscated JavaScript, which is further supported by the presence of deobfuscated JavaScript files. This suggests the primary goal is to execute arbitrary code, likely to download and run 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` `7f7480bdbb3a8d1c7795c208af487e0830efc98b8f3f134f28059d72ef891b5d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12529 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `e33e2a5b270d6c20e8af2978af59a91d90d2349c5538131f2eb0d40f212c4a16`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5111 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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