PDF malware analysis — malicious · e01639b4fa50ee57

MALICIOUS

PDF

2.2 KB

MD5: 3374e35b094316107c56a38ab8a2283a SHA-1: ae67699292d86b398d61d299fb6d78a9d8245f46 SHA-256: e01639b4fa50ee5723a0030c84e030d6d28b7a321eb238c0e8e745677c40619e

238 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file exploits CVE-2009-0927 and CVE-2008-2992 vulnerabilities through embedded JavaScript. The JavaScript is obfuscated and uses eval() to execute, indicating it likely downloads and runs a second-stage payload. The ClamAV detection of Pdf.Exploit.Agent-35646 further supports its malicious nature.

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)
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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` `33538e9d58a913d499ae32f80e9cfc4985f66b6d24ba4e0c218ad151409e3551`	pdf-javascript-stream	PDF /JS object 9 at offset 0xBC	15547 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` `8b94038f99f330540a10fd9f30fa1b262cbdfbab2195cd18ef52c4b7555bd8e2`	deobfuscated-js	split-join delimiter stripped JavaScript at offset 0xE7	5597 bytes
Detection ClamAV: Pdf.Exploit.Agent-35646 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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