PDF malware analysis — malicious · ca1f29811de1a9d0

MALICIOUS

PDF

71.2 KB Created: 2010-05-14 14:03:28 +02:00

MD5: d39e5018c648d2cf1db87f5de7a92723 SHA-1: 0e46aa17a58fb3f9f8cfd87992f3cfab7e9a198b SHA-256: ca1f29811de1a9d04a80b6df36a2806e5dee37736cf2acbe8f5f709680eecc0c

162 Risk Score

Malware Insights

MITRE ATT&CK

T1059.003 Windows Command Shell T1204.002 Malicious File

The PDF file contains a critical PDF_LAUNCH heuristic firing, indicating an attempt to execute an external program. Specifically, the PDF_LAUNCH_COMMAND heuristic reveals that cmd.exe is launched with parameters designed to write arbitrary content to files on the local system. This strongly suggests an attempt to execute commands, likely as a precursor to a more complex attack.

Heuristics 5

Launch action critical PDF_LAUNCH

PDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
/Launch action target: cmd.exe critical PDF_LAUNCH_COMMAND

PDF /Launch action specifies an executable target with parameters '/C echo hihi >> c:\\coucou.txt && echo toto >> c:\\coucou.txt && echo' — references a known-dangerous executable (cmd, PowerShell, etc.).
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction that launches, submits, or opens an external target
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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/xap/1.0/
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/xap/1.0/mm/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_cff_off0000135e.bin` `e0b74124f131f1d8e85f1769181d3cdcb2b3a1f2d5d9fac5b13777fc512f46a7`	pdf-font-stream	PDF embedded font (cff) at offset 0x135E	85952 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.44, consistent with packed or encrypted content.

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