PDF malware analysis — malicious · 328ae5078e3248af

MALICIOUS

PDF

11.9 KB

MD5: c8911b8331067d81599a23096804f45b SHA-1: 93437eacc0c7cd0b80da6644eb1903062313b220 SHA-256: 328ae5078e3248af3a7e6917e5ac6f43a75fc0a5296db1d89e13beba6589c8c5

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. A critical heuristic identified the CVE-2007-5659 vulnerability related to 'Collab.collectEmailInfo', suggesting the exploit attempts to leverage this flaw. The presence of deobfuscated JavaScript files further supports the execution of malicious code. The exact intent of the script is unclear due to obfuscation, but it is highly likely 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` `9f2618b0e15842ef7fa304127a6dad08d045aa78c3d41f1f67d4b2a8da65df83`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12182 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `ec30403d25c7b618dec1b7ee91e5ec680d0748231615654698d058e26a795f27`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5035 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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