PDF malware analysis — malicious · f353186f6dd2eed5

MALICIOUS

PDF

12.7 KB

MD5: bb1fa79bcb8c88e71931ce6ca45d7acc SHA-1: a8dd9fa3464dc99efde5f4df39afe92f1e6918b5 SHA-256: f353186f6dd2eed579b1e2fe425c620d9f226347246bfd628310e24f82d5ffe8

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, identified as malicious by ClamAV (Pdf.Exploit.Agent-36062). The critical heuristic CVE_2007_5659 indicates exploitation of a known PDF vulnerability using JavaScript. Deobfuscated JavaScript files were extracted, suggesting the script's purpose is to download and execute further malicious content. The exact payload and delivery mechanism are not fully discernible from the provided evidence.

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-36062 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36062
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` `068944f8c011a88ab770b45c6de142b9305a1f515d410204d5eadd9ac2b5bfb3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	373 bytes
`legacy_pdfkit_stage_000.js` `ba7e0ecb82fdf1e8a02587d81a59a2b41a518efc96d8fbe2d3c870a59fcea76a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12463 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `5b991739a5c222de7461f1972d48a7d7be0a381d034499ce6440a1ab64d9cb82`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5113 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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