PDF malware analysis — malicious · faa717dff5b8f6b5

MALICIOUS

PDF

12.7 KB

MD5: a04c4905e7ad39648ad2092408de37ef SHA-1: 4da7f20c1ffebd6020ac3ce85abce20e4147010b SHA-256: faa717dff5b8f6b533c234d16e88eaf4070e513ff8ffff93586667908a5d4d60

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that exploits CVE-2007-5659, specifically targeting the Collab.collectEmailInfo function. This exploit is designed to execute arbitrary JavaScript, as indicated by the heuristic firings and the presence of deobfuscated JavaScript streams. The likely intent is to download and execute a second-stage payload, leading to a malicious infection.

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-36064 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36064
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` `a5c8f0f722df4dd9876a0087e1eee65bd3020c5995f94f6729f7e17f3f3677a0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	331 bytes
`legacy_pdfkit_stage_000.js` `2a4572c11885b66af2c23e89e9e1c3c23180e280cd658a1ebf53b00ce060e0d2`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	11846 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `cabab1ec0758829eb7f5a01aebe791d6d68f7adc0b9bb4eb5bdcd79c12072c75`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	4898 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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