PDF malware analysis — malicious · 0327e1729eeb29c5

MALICIOUS

PDF

19.1 KB

MD5: 4e905fc4e065c130b4bb898d6b573092 SHA-1: cb49db60938c55c5e88070b1a06ca849222e0486 SHA-256: 0327e1729eeb29c59832450ee0c855f89450593a72dd121e5c5e0e923bc67dd6

310 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains obfuscated JavaScript that exploits CVE-2009-4324, as indicated by the 'PDF_JS_EXPLOIT_CLUSTER' and 'CVE_2009_4324' heuristics. The script contains an embedded URL, 'http://gospeltube.com/cache/.svn/.p/.l.php?l=1&spl=pdf_newplayer', which is likely used to download a second-stage payload. The ML classifier strongly flags this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 9

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
PDF JavaScript shellcode contains an embedded download URL high PDF_JS_SHELLCODE_DOWNLOAD_URL

Decoded PDF JavaScript shellcode contains a hardcoded http(s) URL stored as little-endian %uXXXX Unicode escapes. Reader exploit shellcode embeds the second-stage fetch URL this way and pulls it down with a urlmon/URLDownloadToFile-style download-and-execute (commodity downloader behaviour rather than a specific Acrobat CVE).
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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://gospeltube.com/cache/.svn/.p/.l.php?l=1&spl=pdf_newplayer

Extracted artifacts 10

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111711_000.js` `c265df3cde5d2c5a0c14b4b5f12aef97d8b28af9ba2f456c4f5a6a28efd780c0`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	2968 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 6 long base64-like blob(s).
`javascript_obj111712_001.js` `3c9a82991f56376a85f5f108ab07129a4a8e865a1648206f802af01017735475`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xD5C	13654 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 6 long base64-like blob(s).
`javascript_obj111713_002.js` `d2b04932a4a653ad8f4a856adfaf3537d3eac200363113b4909f551286136c51`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x42E8	2396 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 6 long base64-like blob(s).
`javascript_obj111711_003.js` `4df3b9524530d9daa4d93033c938484ea6b1818cab46f4d39632bf5af7ea4cd6`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x1B2	19174 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 18 long base64-like blob(s).
`javascript_obj111712_004.js` `42c7fbe0abbd9c7297712430b4a803972111694bb2fd53283d4cb553b679e47a`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xD80	16152 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 12 long base64-like blob(s).
`javascript_obj111713_005.js` `029e0db0edf951513f19c5066131bf6633e24b4f967ed7ea92a53c678b2a4650`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x430B	2445 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 6 long base64-like blob(s).
`legacy_pdfkit_stage_000.js` `3af672dfcc1afa5bf58c9f0f873abaa25352c06c31913820aee3811b939271af`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xD5C	1074 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `623d6f5d6ad4b1d1b7f91b88fe6fec0fcf4b416703074133342401166ffdcbd4`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x42E8	171 bytes
`legacy_pdfkit_stage_002.js` `805a8895435c70bed96c1bf304fc3357360540f66b813f54726fb832b61da3b0`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x1B2	1246 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_003.js` `fb135993a05a88dd0b0d7d7e07493ced115eb69ef7a9b9c47dcf0c5a47a4aacd`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xD5C	6406 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 10 eval/decoder/string-building token(s).

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