PDF malware analysis — malicious · af1b9faa7e766a8e

MALICIOUS

PDF

12.7 KB

MD5: 30b5cef61b6380d76a1dd1313cd64875 SHA-1: 3ed3e86dd34740d1cc822ee5083636652022bcf8 SHA-256: af1b9faa7e766a8ed8d17b524fb27074c34d369d2cdabb8478ac57a0173cb9a3

140 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that is obfuscated and likely exploits CVE-2007-5659. The heuristics indicate that this JavaScript is responsible for downloading and executing a second-stage payload, as evidenced by the ClamAV detection of 'Pdf.Dropper.Agent-7293233-0' and the presence of deobfuscated JavaScript files. The attack pattern involves luring the user into opening a malicious PDF that triggers an exploit, leading to further malicious activity.

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-7293233-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7293233-0
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` `7e11ed5e949faa32266fe9bf3f541c7c21c5907580951204083c81c62036508e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	12412 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `776dcebb1b7c66fd2b9214981dd617ef2ea9bdc1e14890d6117a991b83a81193`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	5109 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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