PDF malware analysis — malicious · 3d0a25d4d82cc11d

MALICIOUS

PDF

9.9 KB

MD5: c1a797c8f0268d9b67e6e2d06d27f88a SHA-1: 76894bcd5a3e0a5a399aca3edb7a3ba09222936b SHA-256: 3d0a25d4d82cc11da5d4aff736c7ff47db07fa91cfdf5110b0d5209cef29883c

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that is obfuscated and staged, indicating a downloader or exploit. The critical heuristic 'CVE_2007_5659: Collab.collectEmailInfo' strongly suggests exploitation of this vulnerability. The embedded JavaScript is likely responsible for fetching and executing a secondary payload, a common technique for malware delivery. No specific family could be identified due to the generic nature of the exploit and obfuscation.

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)
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.
syncAnnotScan annotation-staging primitive low PDF_FOXIT_SYNCANNOTSCAN

PDF JavaScript calls syncAnnotScan() — a no-op annotation-enumeration primitive used by exploit-kit JavaScript to stage payload reads from annotation /Subject fields before eval(). Not a vulnerable sink itself; rarely seen in legitimate PDFs. (matched in decompressed stream)
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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `dc37160715dd481d0bf49e7af5079aad16ed0e66896c1ae05ca27000b3e4454e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	259 bytes
`annotation_subject_callee_hex_stage_000.js` `073facb9b2206aeadfe3dd4fce1595d5de21805fd1624931e216df091a42639a`	deobfuscated-js	annotation-subject callee-key decoded JavaScript at offset 0x14A	5320 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `1bb2399f15d80f3f63c9a82d9e9316bae78f78158a07370412d42e2ab482d11e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2D4	12541 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`deobfuscated.js` `4b6d406cd8ef9eced193823d2722dc01ac6dac3ae44facf13e1ccb112f3a612d`	deobfuscated-js	PDF JavaScript deobfuscation pass	44369 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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