PDF malware analysis — malicious · 32f79cdf65792e8c

MALICIOUS

PDF

2.3 KB

MD5: 3067d2aae286715cff81e777fb854671 SHA-1: 87effdece6f4824997331c3b6d427f23d1e45223 SHA-256: 32f79cdf65792e8cf317144d2a913cf44edfb266c51aca51adade4b8114ccedc

220 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.001 Malicious Link T1059.003 Windows Command Shell

The PDF file contains embedded JavaScript triggered by the OpenAction, exploiting CVE-2009-0927 and CVE-2008-2992. The JavaScript is obfuscated but appears to use eval() to execute further code, a common technique for downloading and running secondary payloads. No specific URLs or hashes were extracted, limiting the IOCs.

Heuristics 7

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)
util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0009_000.js` `9b7d84dc56e7a5439a2744e40ec2d9e4a919e20f020544e71f9253e6789c7753`	pdf-javascript-stream	PDF /JS object 9 at offset 0xBC	21884 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `ad52d0befc9b725cd82dd1239e029d1650d46e6b1fdbfaf46a505d58fc87567e`	deobfuscated-js	split-join delimiter stripped JavaScript at offset 0xE5	5933 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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