PDF / .TMP malware analysis — malicious · 493a7cce52d0fec8

MALICIOUS

PDF / .TMP

745.1 KB

MD5: 27acb40770bdba5615d93472e94098d5 SHA-1: 811ce5e9cb30dd541adf5a73694b352be9719152 SHA-256: 493a7cce52d0fec87d2302f8d881676d23bff5534564a0110aa79542f3c2f1f4

88 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 JavaScript T1059.003 Windows Command Shell

The PDF file contains embedded JavaScript, identified by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2009_4324 heuristic indicates the exploitation of a known vulnerability in PDF readers. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, as suggested by the suspicious extracted JavaScript files and the presence of external URIs. The primary external URI observed is http://www.imagepdf.com/.

Heuristics 7

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)
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
External URI info PDF_URI

PDF contains an external URL action
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://www.imagepdf.com/)/S/URI
- http://www.imagepdf.com/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `8c2ce46f3379f526a0b32f38f1b6a38c1c51660a1203fa052a7db5c5acc82934`	pdf-javascript-stream	PDF /JS object 7 at offset 0x130	41410 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `7a6b9efa5f35da105c641975b531a95b829735f78b2a580affa5fed623663638`	deobfuscated-js	numeric array XOR decoded JavaScript at offset 0x130	9801 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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