PDF malware analysis — malicious · ba3b9402199dcedc

MALICIOUS

PDF

45.4 KB

MD5: 8ee2e581c658c966001f3918b42bd88c SHA-1: 75e356b2496d84d93e917a7e2e7f3bbb008f4a3b SHA-256: ba3b9402199dcedc1ca9352862fd071622d762340594684952f09419dd301510

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.001 PowerShell

The PDF contains embedded JavaScript triggered by the CVE-2007-5659 vulnerability, specifically using the 'collab.collectEmailInfo' function. This indicates an attempt to exploit Adobe Reader to run malicious code. The presence of U3D content and multiple JavaScript streams further supports this attack vector. The exact payload or subsequent actions are not fully discernible due to obfuscation, but the primary intent is exploit execution.

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.
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.
syncAnnotScan annotation-staging primitive low PDF_FOXIT_SYNCANNOTSCAN

PDF JavaScript calls syncAnnotScan() — a no-op annotation-enumeration primitive used by exploit-kit JavaScript to stage payload reads from annotation /Subject fields before eval(). Not a vulnerable sink itself; rarely seen in legitimate PDFs. (matched in decompressed stream)
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_obj0009_000.js` `571d6d781ee734c470db0b973d3bf8bb037ccab9ee14b53d1a6190433ad265f3`	pdf-javascript-stream	PDF /JS object 9 at offset 0x470F	554 bytes
`legacy_pdfkit_stage_000.js` `b7f55d3bbaba6988081bfbdee2b4796f247e936208204378a4a334c9102172cc`	deobfuscated-js	z-percent UTF-16BE base-21 decoded JavaScript at offset 0x1C2B	5575 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`deobfuscated.js` `7b6da10aecb999edac42871df8b37c644ae7ab3633557503d0201208931fe8fc`	deobfuscated-js	PDF JavaScript deobfuscation pass	330905 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`u3d_00_off00004972.bin` `a96e1fca2499edf504d3934052ca1fc338d4b4898a65e6a361937ed1ba0dc0fe`	pdf-3d-stream	PDF U3D 3D stream at offset 0x4972	28021 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.79, consistent with packed or encrypted content.

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