PDF malware analysis — malicious · 8d6d5861f51fe9a2

MALICIOUS

PDF

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

MD5: 70de6c3463d3d65ed64418f09696627b SHA-1: 7bcb02aa57dda91e960b435ba0bc59e75e74d158 SHA-256: 8d6d5861f51fe9a27ced3843f1f5f3ffecd39d4f40ffc4306795ebd6744804ca

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that utilizes eval() and unescape() functions, indicating obfuscation. The critical CVE-2007-5659 heuristic firing points to the use of Collab.collectEmailInfo for JavaScript execution. This technique is commonly used to download and execute further malicious content. No specific family could be identified, but the attack pattern is consistent with PDF-based malware delivery.

Heuristics 6

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)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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` `9d70141af3a822acccc264ef07edff74fb35057902ba021de6dd368c8575e640`	pdf-javascript-stream	PDF /JS object 15 at offset 0x14F	251 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0017_001.js` `21148ef5b086d126e0d668173425d4857248103dc1823e85f4ed80fed521c549`	pdf-javascript-stream	PDF /JS object 17 at offset 0x7DB	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 0x28A	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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