PDF malware analysis — malicious · 954ec394cba974a8

MALICIOUS

PDF

12.1 KB

MD5: 91a4d61388fe70abac79bdf86b71b630 SHA-1: 0f15715e9d12a43eeb78734b303c00407037f006 SHA-256: 954ec394cba974a8403c3fb724fc59e4486209ff2d0ec2ca9e7c5e12e513e52e

146 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious Link/URL T1059.003 Windows Command Shell

The PDF file contains embedded JavaScript, specifically leveraging the CVE-2007-5659 vulnerability through the `Collab.collectEmailInfo` method. This indicates an attempt to execute arbitrary code. The presence of multiple JavaScript streams and the ClamAV detection as 'Pdf.Exploit.Agent-36079' strongly suggest malicious intent, likely to download and execute a second-stage payload.

Heuristics 6

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-36079 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36079
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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` `ef8bdac794684ae9cd4eb7091d80e1c5ca478c06c639d72d01626c1f7ce78b6d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19C	578 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `7f05fa54feb272728a859d7d121fc2ed8847c59b01d253becbbb1297f055de69`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x36F	12594 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `053fea8c3e8300766db33f6c04b0c90a5166f7d660dc8abb1bc7216f36abaa09`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x36F	5234 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.