PDF malware analysis — malicious · 50ad5fbd97df72e7

MALICIOUS

PDF

45.4 KB

MD5: 46451c1ec8008bf3605eba56f8e11e55 SHA-1: 07615ac7e98e0e6f1fbc8a5f4991932c5b068e7a SHA-256: 50ad5fbd97df72e7b5b241e4bd4c81059adcda2a67b253a1dda454a097a06243

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded JavaScript, triggered by the CVE-2007-5659 vulnerability via the `collab.collectEmailInfo` function. This JavaScript acts as a stager, likely downloading and executing a second-stage payload. The presence of U3D content also indicates a potential exploit vector. The high confidence is due to the direct exploitation of a known CVE and the clear stager functionality.

Heuristics 7

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)
U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED

PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
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_obj0009_000.js` `f6cfd7e0d7b6d48fa98774e01bd7c172232669e5a6080722adf7a5753a6eec07`	pdf-javascript-stream	PDF /JS object 9 at offset 0x4748	441 bytes
`annotation_subject_callee_hex_stage_000.js` `21f05fea8f4461e1d233583fc7f0b351c3348de8af69015d4d43a152f50bb653`	deobfuscated-js	annotation-subject callee-key decoded JavaScript at offset 0x1CD6	5794 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`deobfuscated.js` `7f88a2e2d7f49c6d4b5b82e8bb98f27c0f814597325f239226aa6c659f08a5de`	deobfuscated-js	PDF JavaScript deobfuscation pass	227813 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`u3d_00_off0000497f.bin` `fb27c6f6ffe2b08a88f79f344ef3cb4f85460ac81a062194b6fd84ab6e48b628`	pdf-3d-stream	PDF U3D 3D stream at offset 0x497F	28021 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.79, consistent with packed or encrypted content.

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