PDF malware analysis — malicious · bdd5eddea11ad81e

MALICIOUS

PDF

9.6 KB

MD5: 33394a8feb72a1bfb9c9dddf372c9bf8 SHA-1: 3cfd276b21d7089ce65c14e5a6ac16c89f4ccf1d SHA-256: bdd5eddea11ad81e63dbf3df3204a2ef4196d60f3a029947b2c830d54363fb17

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, triggered by the 'Collab.collectEmailInfo' method, which is known to exploit CVE-2007-5659. This exploit is designed to download and execute a second-stage payload. The presence of multiple deobfuscated JavaScript files further indicates a complex, multi-stage attack. The document body is unreadable, but the exploit and script content strongly suggest a malicious intent to compromise the user's system.

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)
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_obj0005_000.js` `f048286b2dfe205330e162117bc9e2e9406092389e25aa91660890d79cb205b6`	pdf-javascript-stream	PDF /JS object 5 at offset 0x107	916 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` `11fe028232d5f874299de52f26970b4bcb1a5fd4c75211c2297dd58594c2463f`	deobfuscated-js	z-percent hex-pair decoded JavaScript at offset 0x3C7	4981 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `8986ff9fe8b31161cb352daabf5b32f321c053592f963bcc45d468947ecd6385`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x3C7	11792 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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