PDF malware analysis — malicious · bf32a8782031e28f

MALICIOUS

PDF

2.7 KB Created: e1svrt Authoring application: Adsfgddfobe (via sfgasdfgsd)

MD5: be274c518e13abe663a40a2c077e5507 SHA-1: 9d9340ff305c8b5f296ae1d2e0db141d08600d3b SHA-256: bf32a8782031e28f8f3c8841ea937ad28982b00d99ed1d0b5c21095d2353a6ec

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1027 Obfuscated Files or Information

The PDF file contains embedded JavaScript, identified by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The critical CVE-2007-5659 firing indicates the use of the Collab.collectEmailInfo method to execute JavaScript, which is then obfuscated and evaluated. This JavaScript is likely designed to download and execute a second-stage payload, a common technique for initial access.

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)
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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_obj0015_000.js` `ed9cfc402fb4c45c5099b7f99605abed333bb475cf6cb3f2304d3f47c18291df`	pdf-javascript-stream	PDF /JS object 15 at offset 0x14F	275 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0017_001.js` `21148ef5b086d126e0d668173425d4857248103dc1823e85f4ed80fed521c549`	pdf-javascript-stream	PDF /JS object 17 at offset 0x7F0	174 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `48e6e588d491c5592658a6b504c1f019ac45864f5c390e689185c2216f1fc30b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x29F	2646 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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