PDF malware analysis — malicious · c1514f52a7ccaa9b

MALICIOUS

PDF

36.8 KB

MD5: 3aa6753b1a1c9bba535b1978e23b70ad SHA-1: 77af14556f9aace47fce184a5c939a9dc401d3d5 SHA-256: c1514f52a7ccaa9b08aa4883750bc3fc392531d2af133de3c22e71554486c76f

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript and leverages CVE-2007-5659 by calling the 'collab.collectEmailInfo' function. This indicates an attempt to exploit a known vulnerability in Adobe Reader to execute arbitrary code. The presence of multiple deobfuscated JavaScript files suggests a multi-stage download and execution process, typical of droppers aiming to deliver further malicious 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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `dea3387033f4f1765349905ad3386e190dc5c60c6e91def256858e0a76a5e830`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A2	351 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` `6dc4337a9202a54159414c7e2f228b3fa4df385a534ad9fd88e3ef15acd87683`	deobfuscated-js	z-percent hex-pair decoded JavaScript at offset 0x304	5369 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `e36fe200539df0253bdfc227eb1ee817cd17cdd4be09384005057c547fe7fdee`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x304	12718 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`u3d_00_off00002729.bin` `70cf2aead4823e6d2651c9281eed0aa967449da358f439efb9e8e707421175e0`	pdf-3d-stream	PDF U3D 3D stream at offset 0x2729	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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