PDF malware analysis — malicious · 8e3ee3674142c516

MALICIOUS

PDF

12.5 KB

MD5: 8483f6cbfe19fa7bea72fb41e4749166 SHA-1: 57cea3afac86ae42e6e84f0cceb76ed8487f3fa4 SHA-256: 8e3ee3674142c5160b829b6861d78191e50d0282c52ba906bad86ac7f6eebd90

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2007_5659 heuristic indicates the use of a known exploit targeting the Collab.collectEmailInfo function to execute JavaScript. This script is likely designed to download and execute a second-stage payload, as suggested by the ClamAV detection of Pdf.Dropper.Agent-7281716-0 and the presence of deobfuscated JavaScript files. The attack pattern involves exploiting a PDF reader vulnerability to achieve initial execution.

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-7281716-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7281716-0
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` `69b799daa9392775775bd2940f1b7810feda8649479353b1cca7e1abcfdd03bc`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	12145 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `1b7e60be021d7890ea7c10dc4fed0c1d243526ec8447fb438add236e82fc2f72`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	5008 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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