PDF malware analysis — malicious · c18a3d4afd14f971

MALICIOUS

PDF

6.0 KB Created: e1svrt Authoring application: Adsfgddfobe (via sfgasdfgsd)

MD5: d58af03964bb322f4f18cb48974b682e SHA-1: ee7668165e2090f71dab530482d3d5cabb43bbdf SHA-256: c18a3d4afd14f971043fe078ac4ddfd1488720f622c2dcd6d29577339bf0e550

258 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded JavaScript that exploits multiple known vulnerabilities, including CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. The heuristics indicate that this JavaScript is used to execute a malicious payload, as confirmed by ClamAV detection of 'Js.Exploit.Shellcode-18' on an extracted artifact. The document body is heavily obfuscated and unreadable, providing no further context on the lure.

Heuristics 7

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
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)
Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (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.
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_obj0006_000.js` `d9a6c9bbe026dd2beb0fe2806ac7d2958a06ca7f3a047cfd8e07431fb57b4aea`	pdf-javascript-stream	PDF /JS object 6 at offset 0x14A	482 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `9832666ea93a5461619234f5afd18344cf80a3d1fcab714ff9832a8470a3fd41`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x30F	11383 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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