PDF malware analysis — malicious · 7ec2f746a6a70e48

MALICIOUS

PDF

13.4 KB

MD5: 3e4728fe00773e0a114f8d0ecae6e00a SHA-1: cf6356858c850c88882223865619dd22f510466e SHA-256: 7ec2f746a6a70e487c31903756262beb80c181f01ba70fbcc329097c31dd9074

186 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains obfuscated JavaScript that utilizes the CVE-2007-5659 vulnerability (Collab.collectEmailInfo) to execute a second-stage payload. The critical heuristic firings indicate a binary-XOR JavaScript stager and exploitation of this specific CVE. No document body text was available for analysis, but the presence of the exploit and stager strongly suggests an attempt to compromise the user's system.

Heuristics 7

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: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
Binary-XOR JavaScript stager high PDF_BINARY_XOR_JS_STAGER

PDF JavaScript stores viewer-version payload branches as long binary digit strings, XORs each bit pair, converts 8-bit chunks with String.fromCharCode, and evals the recovered exploit stage.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0049_000.js` `0466585860342d9f2158620336e959657fd3ceb840c9424e740f05efce5791af`	pdf-javascript-stream	PDF /JS object 49 at offset 0xA	79816 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 6 long base64-like blob(s).
`binary_xor_stage_000.js` `0763c6e73048e30deca834065d9b02da398cd9f62e481cf18a617ddd9f6b1f14`	deobfuscated-js	binary-XOR decoded JavaScript at offset 0x464	1336 bytes

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