PDF malware analysis — malicious · 4b241340407c1d24

MALICIOUS

PDF

13.0 KB

MD5: 7c487c00c5b4fb45c78ff079df386912 SHA-1: 9811b44c19b933388de486693c6aea4ca816330f SHA-256: 4b241340407c1d24312caa5703fedc8514857f2789edd950050f03c9f3d595bc

138 Risk Score

Malware Insights

The PDF file contains embedded JavaScript that is obfuscated and uses the unescape() function, indicating malicious intent. The critical heuristic firing for CVE-2009-0927 (Collab.getIcon) confirms exploitation of a known vulnerability. The JavaScript is likely designed to download and execute a second-stage payload.

Heuristics 6

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. (matched in decompressed stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `d613950c57a9ca9b99bcc1bf1ebe6a4588122c44bdfd872390d2015535e68470`	pdf-javascript-stream	PDF /JS object 6 at offset 0x12D	3653 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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