PDF malware analysis — malicious · f82cbd4ba983b660

MALICIOUS

PDF

3.2 KB

MD5: dfd838641de6529364be1fb251f0dd1f SHA-1: ee61b951af34f5932353389b7fa166a6b5d2cecb SHA-256: f82cbd4ba983b66032e95dc9d54d3e1fdf4448dd468d146050dd9407ea1537be

160 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript and is configured with an OpenAction to trigger it upon opening. The critical heuristic firing indicates exploitation of CVE-2009-0927 using the Collab.getIcon method. This suggests the primary purpose is to leverage this known vulnerability to execute arbitrary code, likely to download and run a second-stage payload. No specific family could be identified, but the exploit vector is clear.

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` `50cb2f317ebfb0275a7795fa58578843976d1517b7b06bf0b3b3b391f0f8191e`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	2392 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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