PDF malware analysis — malicious · 7ab87e83d8c2daf8

MALICIOUS

PDF

11.6 KB

MD5: c02742affe29b3702c25af00d3282362 SHA-1: aa9b57a24c7150df0fcde1773fb959cace5f1660 SHA-256: 7ab87e83d8c2daf848eece3f88a2b69ff8650594fdab3de5279d84fd8cd644aa

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. Specifically, the CVE_2007_5659 heuristic indicates the use of the Collab.collectEmailInfo method to stage and execute JavaScript. This JavaScript, recovered as annotation_subject_callee_hex_stage_000.js, is heavily obfuscated but its presence and the exploit used suggest a downloader or dropper functionality. The primary attack vector is the exploitation of CVE-2007-5659 within the PDF document.

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)
Annotation subject callee-key hex JavaScript stager high PDF_ANNOT_SUBJECT_CALLEE_HEX_STAGER

PDF JavaScript uses syncAnnotScan()/getAnnots() to read an indirect annotation /Subject stream, percent-decodes it through marker replacement, then uses a callee.toString()-derived key to decode and eval the final exploit stage.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `83c89bafa116d9c91eff0b9ebda502f5bf0baa04c36fa774c6ebc2756ba3479f`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A6	585 bytes
`annotation_subject_callee_hex_stage_000.js` `7d3aaacf8abfb960a7a0a94655d23ae3119b66f81d6f58e7d46b3bccee32485f`	deobfuscated-js	annotation-subject callee-key decoded JavaScript at offset 0x14F	5156 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.