PDF malware analysis — malicious · d854dda06b49814a

MALICIOUS

PDF

12.0 KB

MD5: b70ca9522b136a3be0b8f033715f516b SHA-1: 34404b04c6a72fba5846cdbd2884a6ab287ff0ff SHA-256: d854dda06b49814a6d650816fd1e53ffc4ac44b049be23dd0ecaa75c278a82cc

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, specifically identified as exploiting CVE-2007-5659 via the Collab.collectEmailInfo method. ClamAV also detected this as Pdf.Exploit.Agent-36065. The deobfuscated JavaScript streams, legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, suggest the script's purpose is to download and execute a second-stage payload. The lack of readable document body text prevents a more specific determination of the lure.

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-36065 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36065
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` `9c67560e8c63b720885d3efc1627b844b86a6ec08e99e5b65a22eae832045756`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19C	431 bytes
`legacy_pdfkit_stage_000.js` `12e473244756874d2a8f6e3ea213acf2d039ffae540bb5021b5d08f73425ba24`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12250 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `2bc70247b6e4ed4bdf6fcab8b3a4f8357c78bf3f6f3f0a91606acfb2533e5ec3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5096 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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