PDF malware analysis — malicious · 21481bdd348c73e8

MALICIOUS

PDF

40.3 KB

MD5: f4e01d7f271ae3393a8e254f0b4a26e1 SHA-1: 041fa1b7a9752c1099fcf077b79e17787ebd58bb SHA-256: 21481bdd348c73e820f606336fb739592f1595bf1940444f1e229f4989b3b7e2

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript and U3D content, triggering critical heuristics for CVE-2007-5659 and ClamAV detection as Pdf.Dropper.Agent-7238258-0. The embedded JavaScript, specifically the 'Collab.collectEmailInfo' function, is known to be used for exploiting vulnerabilities. The deobfuscated JavaScript files suggest the execution of a dropper mechanism, likely downloading and executing further payloads.

Heuristics 6

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)
U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED

PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
ClamAV: Pdf.Dropper.Agent-7238278-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7238278-0
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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `1847af0a099665b6ac45af66402e56ed64237a1b287618ee3d6643267fda6f35`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A4	343 bytes
`legacy_pdfkit_stage_000.js` `d96be2c225e18dce75fcf21a46c5685383113ef3667f60cd4e8cf30228905744`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F7	13269 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `bfd7b52e11abd3f29bc95313e67d0389f9c913305df36ae2997f6af00d2ec016`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F7	5523 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`u3d_00_off000034ec.bin` `48816569ab4f370009a917ef6429edbe09e4dfe8a63b00a0a0f75a904c62ba94`	pdf-3d-stream	PDF U3D 3D stream at offset 0x34EC	27449 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.

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