PDF malware analysis — malicious · ac8f47ecf576af19

MALICIOUS

PDF

12.8 KB

MD5: 98194ddcf9f3427001a81e6b9564f541 SHA-1: 6de27166be8e5f4856c2780efca3c48c0a2c34a1 SHA-256: ac8f47ecf576af199927e4130c2b8974ea7a502efb8f673732c0c31ba53c79a0

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by the CVE_2007_5659 heuristic, which is designed to exploit a vulnerability. The critical ClamAV detection as 'Pdf.Dropper.Agent-9448723-0' further confirms its malicious nature. The embedded JavaScript likely functions as a dropper, downloading and executing additional malicious content. The file's SHA256 hash is included as a primary IOC.

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.Dropper.Agent-9448723-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-9448723-0
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 3

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 0x19D	343 bytes
`legacy_pdfkit_stage_000.js` `db0841aac33507cda24ec1844d76bd092b889639030991a99f4d70e887cb05ac`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	12741 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `15b6dadcdeff601e6c66bd3a78c7632196a3fa1e7bdcec5f81dc302e034bbc22`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	5272 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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