PDF malware analysis — malicious · d0ffb42f34e013e2

MALICIOUS

PDF

3.6 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 6f8cab3ca27df8fc78d81d681ca7cb4e SHA-1: 5806a588d7fe06207889e150fe60dd365bfc9c00 SHA-256: d0ffb42f34e013e210cfe7a29dfd49803b58178674693c7b8e957967c9d38d38

216 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

This PDF document is malicious due to the presence of embedded JavaScript, triggered by the OpenAction. The script utilizes eval() and String.fromCharCode, and specifically targets the CVE-2007-5659 vulnerability (Collab.collectEmailInfo). This indicates the document is designed to download and execute a second-stage payload. No specific family could be identified.

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)
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
Suspicious extracted artifact high 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.
String.fromCharCode medium PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically (matched inside decoded stream)
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `377f3114acf9c1467f1518f3560d83bd6ff2ac05ca5fc03bf49131f7546b1ea0`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D7	14011 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).
`numeric_charcode_stage_000.js` `58019040b7db57e35d91ed25b5512c99063de8bdc064e6057612211bd6117a7c`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x445	4260 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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