PDF malware analysis — malicious · a92b7d6cd287839f

MALICIOUS

PDF

12.2 KB

MD5: bdd00da2dafd5d735805ee153f2b5e79 SHA-1: be9da70c7113515274c3753947359ac20b62467b SHA-256: a92b7d6cd287839fb8311ac551d995bc5c428f15c6b6d008a0ad653cfb6cc291

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, identified as malicious by ClamAV and triggering critical heuristics related to CVE-2007-5659. The JavaScript, found in streams and deobfuscated files, is likely responsible for executing the exploit. The primary function appears to be downloading and executing a secondary payload, as indicated by the presence of deobfuscated JavaScript files.

Heuristics 5

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: Pdf.Exploit.Agent-36062 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36062
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `068944f8c011a88ab770b45c6de142b9305a1f515d410204d5eadd9ac2b5bfb3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	373 bytes
`legacy_pdfkit_stage_000.js` `07f3cab47c0e018f370dd1c5112810ab1859df4ec1fbfff8fb5b27dbed3b2fc8`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12158 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `232a4d307a850a8ad3ed4bcdcc93229351688927f0f03bd185ebeee4259eab23`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4991 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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