PDF malware analysis — malicious · 2ddfc570ecab8b8e

MALICIOUS

PDF

2.2 KB

MD5: 676ce60a23ce41d4189b371289be2be9 SHA-1: cadc2fd5e3fd252b91985b3db673358c47de2021 SHA-256: 2ddfc570ecab8b8e88be9e7ec9942078d4395c4a8eed1af690a2d97148b19a0a

238 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that leverages CVE-2009-0927 (Collab.getIcon) and CVE-2008-2992 (util.printf) to execute arbitrary code. The heuristics indicate that the JavaScript is obfuscated and uses eval() to run the deobfuscated code. This pattern is commonly used to download and execute a second-stage payload. The extracted artifact 'legacy_pdfkit_stage_000.js' was flagged by ClamAV as Pdf.Exploit.Agent-35646, further supporting the malicious intent.

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` `1a59fa23e3bedfb9477e226fcae591393fee31102254c133c63bef49a1dbafd7`	pdf-javascript-stream	PDF /JS object 9 at offset 0xBC	15993 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` `0af2ce48e0ecc0d805fd74031da853b7da3d49c92d19aa0a44ff32507d27e6e3`	deobfuscated-js	split-join delimiter stripped JavaScript at offset 0xF2	5755 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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