PDF malware analysis — malicious · 9cff0e48366fb43b

MALICIOUS

PDF

12.4 KB

MD5: e4b61e3cf81829df6861a55d51e17563 SHA-1: 95153a862078cdf459f6f659149aa9cbc7060ff9 SHA-256: 9cff0e48366fb43be7e8202aa30642e80c3e9c1f22a7bc46edfd66f607c837b6

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 via the Collab.collectEmailInfo function. This JavaScript is further obfuscated and split into multiple streams, indicating an attempt to hide its malicious actions. The primary intent appears to be the execution of a second-stage payload, as suggested by the heuristic firings and the presence of deobfuscated JavaScript files.

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` `cbd00d8a0b5a003acc047b05fa0d4206a8f47fdbdd80447bf275c35b01a6e6f5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11993 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `11aa2c6da7cd66745f5312d8ac2d2c93beba1471723a625a7a2e1310696c5a19`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4996 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.