PDF malware analysis — malicious · 6eb52bfd5ddb71ce

MALICIOUS

PDF

22.7 KB

MD5: 1ba0424eda8bf7fb0a25369df91f3cb3 SHA-1: 3bd43a84e04e292ec7fedd4a4583d81b52799024 SHA-256: 6eb52bfd5ddb71ce128662a6655eeadde20acde5e6234341892bbeb83c520a6d

310 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file contains JavaScript that exploits CVE-2009-0927 (Collab.getIcon) to execute arbitrary code. The script is heavily obfuscated but ultimately attempts to download a second-stage payload from the URL http://gospeltube.com/cache/.svn/.p2/.l.php?l=1&spl=pdf_collab_geticon. The presence of exploit code and a download URL indicates a malicious intent to compromise the user's system.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 9

Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (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/.p2/.l.php?l=1&spl=pdf_collab_geticon

Extracted artifacts 10

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111711_000.js` `0ebb4aa27d38fb61fdf6e42c9675fa86c8cc9c7475b884e2b33d44af1e521b72`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3184 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` `67b8dedc477c6a579e04bd03fd02bff656a5078e1b57f4e9cb71ded901c414ae`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xE34	17658 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 4 long base64-like blob(s).
`javascript_obj111713_002.js` `85ff92d998d2f97a53642f55c57c7df307c3290b43235f0d7578be4727b5a76b`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x5364	1773 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).
`javascript_obj111711_003.js` `c700de7e2dc36c29976b83a623b92dd62828fc72282a655430b3932a7bf8fe91`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x1B2	22770 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 15 long base64-like blob(s).
`javascript_obj111712_004.js` `a730720d1074bec554c75b4728272de5b8a6623d736df89f0f65ac9d9f714c51`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xE58	19532 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 9 long base64-like blob(s).
`javascript_obj111713_005.js` `2423c1ba1b5023e5f54b4a305271ea6a694e41da45524a431a4154256a035e43`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x5386	1822 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).
`legacy_pdfkit_stage_000.js` `1412a09b263e0a64c28cc7f184247102cbe88e4b5ed6b84ed0c0c83087aaa08b`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xE34	1521 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `407624ceb11bdfcccd03817d5cc6229f3a3f8dfc15051e1567d07f2b81bcede8`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x5364	100 bytes
`legacy_pdfkit_stage_002.js` `e27ccc1eaae955736a0d39666fa1e0ea66bcbac99f90ce5d404c6eb84b9eff2c`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x1B2	1622 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_003.js` `21680e3b35d8e3c725d10158088c684e551d430e3606eac33a0016efab91ab58`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xE34	8215 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 15 eval/decoder/string-building token(s).

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