PDF malware analysis — malicious · b4872ff1e665faf5

MALICIOUS

PDF

3.0 KB

MD5: ef738d90501e5e68638d672dd31d05e4 SHA-1: 8b4bcc34ac8eb536d9c918c221278e0168dc3efa SHA-256: b4872ff1e665faf5f9eb0333d84bb8db840e5171419392edf7e6c347fd4d01c0

160 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file contains embedded JavaScript triggered by an OpenAction, exploiting CVE-2009-0927. The JavaScript is obfuscated and likely intended to download and execute a second-stage payload. The heuristic firings strongly indicate a malicious PDF designed to exploit a known vulnerability.

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)
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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_obj0009_000.js` `a7325f364c10351ce90804db60de01af6f55059fc501ff2c5204846de5164d92`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	2217 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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