PDF / .TMP malware analysis — malicious · b3c7d975febf7704

MALICIOUS

PDF / .TMP

12.2 KB

MD5: dd26a5b536d6ac4293aa14908f447b4b SHA-1: 75f57bede451ba45497dbf0382c02bea078d75fa SHA-256: b3c7d975febf770491f7e2da25e818f3966328231924ab05123cae1a09fb6568

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/Shell Scripting: JavaScript T1204.002 Malicious File: Malicious JavaScript

The file is a PDF containing embedded JavaScript, which is flagged by multiple heuristics as malicious. Specifically, the CVE-2007-5659 heuristic indicates the exploitation of a known vulnerability via JavaScript. The presence of deobfuscated JavaScript files suggests the script's purpose is to download and execute further malicious content.

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` `84914aee39117b615f35969e3d2dcd56f238bf830294c110fd219718386b3589`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11754 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `97a4a928058c4aaac6e436aea38ceaad56c4817625ce7da3df5e5e671e70fbd0`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4867 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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