Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd1e4aaed8f1de68…

MALICIOUS

PDF

6.5 KB Created: 2009-08-14 19:05:09 Authoring application: J5JZQgArw (via wPslp4acFzLyh6)
MD5: 42af7300c4f378f81e977d58f35a586e SHA-1: 4355b4e4ed73f02badbe94817fb39c3a5169a301 SHA-256: cd1e4aaed8f1de68253564d72891de07b54253758bc5868a476eba363cf1c27f
316 Risk Score

Malware Insights

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

This PDF file exhibits multiple critical heuristic firings related to known vulnerabilities (CVE-2007-5659 and CVE-2008-2992), indicating it's designed to exploit these flaws. The presence of embedded JavaScript and an OpenAction trigger strongly suggests the execution of malicious code upon opening. The ClamAV detection as 'Pdf.Dropper.Agent-7305224-0' further confirms its malicious nature, likely acting as a dropper for further malware.

Heuristics 8

  • 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. (matched in decompressed stream)
  • 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. (matched in decompressed stream)
  • ClamAV: Pdf.Dropper.Agent-7305224-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7305224-0
  • OpenAction trigger high PDF_OPENACTION
    PDF has an /OpenAction — code runs automatically when opened
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits (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.
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0007_000.js
0685e4474ee2f641fa283c94baf44d952578c1fc9435bbb51be950bf47bf5534
pdf-javascript-stream PDF /JS object 7 at offset 0x247 5332 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 5 eval/decoder/string-building token(s).