Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e460e35ff2fd08c…

MALICIOUS

PDF

10.2 KB Authoring application: Kebebagemojef (via 7db5aComepedevsa)
MD5: e21afe32185f81d70d740072fede7377 SHA-1: 3bfee166b5ce6fee15379b1fb27c6cc170a0a964 SHA-256: 9e460e35ff2fd08cf28d188e7e99588130362da4d9325636bc22e07f9e71ce81
360 Risk Score

Malware Insights

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

The PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992 through XOR-decoded JavaScript. The 'OpenAction' trigger and embedded JavaScript streams suggest the document is designed to automatically execute malicious code upon opening. The ClamAV detection as 'Pdf.Dropper.Agent-7287239-0' further confirms its malicious nature, indicating it likely acts as a dropper for further malware.

Heuristics 9

  • media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324
    PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
  • 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)
  • util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992
    PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
  • ClamAV: Pdf.Dropper.Agent-7287239-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7287239-0
  • OpenAction trigger high PDF_OPENACTION
    PDF has an /OpenAction — code runs automatically when opened
  • 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_obj0018_000.js
ba2f70a9cfcfa281b16e3089556ae50dd63287c9e6010e81d6490737f5978337		 pdf-javascript-stream PDF /JS object 18 at offset 0x1BA0 3863 bytes
page_word_xor_stage_000.js
742d3794d0a89af91b61fd2d73a06d6cc2f9c4213b10eb0076eeee123ca4242c		 deobfuscated-js page-word XOR decoded JavaScript (decompressed, key=0x3C) at offset 0x803 3400 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 eval/decoder/string-building token(s).

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