Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0e232fb738db8e9…

MALICIOUS

PDF

3.3 KB Created: 2010-02-11 07:29:20 Authoring application: zt9ab06
MD5: 3d90793ab4974798464236d745e25ad5 SHA-1: 565ba0091416f5b46a825f0a0a32cbab9ac9340e SHA-256: e0e232fb738db8e92473ec55efbeb4b68a489e124e42843ddecac97ed767a4cb
198 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript that exploits CVE-2009-0927 and CVE-2007-5659. Static triage identified a suspicious extracted artifact named 'legacy_pdfkit_stage_000.js' which was detected by ClamAV as 'Js.Exploit.Shellcode-18'. This indicates the script is designed to download and execute a second-stage payload.

Heuristics 6

  • Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927
    PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
  • 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 detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0028_000.js
15ae8e4a72fb070197f06521288d14680d52524117e7a80b7195cbd2c533b97b		 pdf-javascript-stream PDF /JS object 28 at offset 0x88 763 bytes
legacy_pdfkit_stage_000.js
a5ed05998ee6c2b83a185975b507cd6d495d539ae96544639704f90442d3a634		 deobfuscated-js repeated-marker hex decoded JavaScript at offset 0x43D 4930 bytes
Detection
ClamAV: Js.Exploit.Shellcode-18
Obfuscation or payload: likely
Carved artifact contains 8 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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