PDF malware analysis — malicious · 715cdc0087bb198b

MALICIOUS

PDF

19.6 KB

MD5: 5bf88154fc9a28a8f3e9e6484fa90514 SHA-1: ad0ae244fd5863e72e8e301e845b7587ca21fb1e SHA-256: 715cdc0087bb198b18e2c7e38de4d13d7d08ca2767e721d2f57616c97989e74e

310 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document exploits CVE-2009-0927 using embedded JavaScript. 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 extracted artifact was detected by ClamAV as Js.Exploit.Shellcode-18, confirming its malicious nature.

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` `c0d18bb77225875b119cc7f46d89539bfc80e4a9d9f3577fc555d3e163ac41c6`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3560 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` `4ec2aa9b0b32d722bfa4e1fc85a242c4fc560fc3c3c6983c6eb35fe77f7ab6cc`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xFAC	14283 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` `9a417a76c1acf59c7cf9452b894aac336414bf1860f3c8f239a3d9e12f7e6218`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x47AD	1684 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` `45cf162e0fe15a82b77cb232e50458be28be707399bc933b4910f018fee5d4f4`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x1B2	19682 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 16 long base64-like blob(s).
`javascript_obj111712_004.js` `e451ccd67833fa8a6ba599c4d8d88b0d5b67277f074025bf4d0ac2d23b59032e`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xFD0	16068 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 10 long base64-like blob(s).
`javascript_obj111713_005.js` `0d3a512979c30c79d37b478d1161963e9fc0e93db5c7d0412f97b3c2339bab13`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x47CF	1733 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` `a7bf9e8f3472d8e456111af54d3cbfd9bd06c7e59489254ed4481e1c4d057ace`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xFAC	1520 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 0x47AD	100 bytes
`legacy_pdfkit_stage_002.js` `92e6ee68583a1f8f3f57b7113704f5feacdadcb4c857a5c511ee3e5a12f9f3cd`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x1B2	1621 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` `7107ad4493e288264c2ec2f21dcd1ffaee67653d69c17bf2c998c56dd42a6158`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xFAC	8210 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.