PDF malware analysis — malicious · e07c35b6585ba19c

MALICIOUS

PDF

13.2 KB

MD5: ab1568a63f6ea22c06cafaa330f43b12 SHA-1: 50fb706457ad2292ac134c39a78f51b3d60afeac SHA-256: e07c35b6585ba19cf6e4f68337ba856b02410da5130f5d7f9f62abc0dc5734f6

186 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.001 Malicious Link

The PDF document contains obfuscated JavaScript, identified as a binary-XOR stager, which exploits CVE-2007-5659 (Collab.collectEmailInfo). This exploit is designed to download and execute a subsequent payload. The presence of the specific exploit and the stager strongly indicates a malicious intent 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` `0b15acaee41ae8f556efa6ca6aaa1c912c0b175e17067b1b3ddba877e256d080`	pdf-javascript-stream	PDF /JS object 49 at offset 0xA	78844 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` `c1d0b40f07e054d1db24581f00b7eeec28d48f6fbe241be1cc149f33d34baa19`	deobfuscated-js	binary-XOR decoded JavaScript at offset 0x3F8	1318 bytes

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