PDF malware analysis — malicious · d94fcbf710efee13

MALICIOUS

PDF

12.9 KB

MD5: 1b59d3a4be17a789b4c16076e6e22088 SHA-1: f7b550dbab522c09a0361f4a66a62f757c4c467b SHA-256: d94fcbf710efee13349067d426634c60c0407989d642bc1269dcdbba79c7eb3c

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The critical heuristic CVE_2007_5659 indicates the exploitation of a known vulnerability in Adobe Reader via embedded JavaScript. The PDF launcher concatenates and evaluates JavaScript, which is further supported by the presence of embedded JS streams and deobfuscated JavaScript files. This suggests the primary function is to download and execute a secondary payload, characteristic of a downloader or initial access exploit.

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` `4b5e6bc661d6bf1930b0a26e46e1604af0767581b9b18da766d35142e8971416`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12548 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `d0151317fce2fe75b2bb4831c685630ffc78e6c912958947edf0de240f2afbb0`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5235 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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