PDF malware analysis — malicious · 7e012d6710aeeb2a

MALICIOUS

PDF

26.3 KB Authoring application: cairo 1.8.8 (http://cairographics.org

MD5: 107c28e625912c168f04e5db25f4ba1e SHA-1: e3e2b15e863b440c69db1792f5cf53e93ccf0f75 SHA-256: 7e012d6710aeeb2a827de838f6f37e601031449ec05f004bbd9ce6e16d8a0678

384 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.003 Windows Command Shell T1105 Ingress Tool Transfer

The PDF file contains embedded JavaScript and a launch action that targets cmd.exe, indicating an attempt to execute arbitrary commands. The critical heuristic CVE_2010_1240 confirms this exploit vector. Furthermore, an embedded PE payload was detected and identified by ClamAV as Win.Trojan.Rozena-131. The primary intent appears to be the execution of this secondary payload, likely downloaded from an external source.

Heuristics 10

Adobe Reader Launch action command execution critical CVE exact CVE_2010_1240

PDF uses the Adobe Reader/Acrobat Launch action pattern associated with CVE-2010-1240: cmd.exe is invoked with attacker-controlled parameters, paired with an embedded/exported payload.
Launch action critical PDF_LAUNCH

PDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
Embedded Windows executable payload in PDF stream critical PDF_EMBEDDED_PE_PAYLOAD

PDF stream bytes contain an embedded Windows executable with a verified PE header. Exploit chains often hide droppers inside ordinary streams rather than standard /EmbeddedFile attachments.
/Launch action target: cmd.exe critical PDF_LAUNCH_COMMAND

PDF /Launch action specifies an executable target with parameters '/Q /C %HOMEDRIVE%&cd %HOMEPATH%&(if exist "Desktop\\ancestor_chart.pdf" (cd "Desktop"' — references a known-dangerous executable (cmd, PowerShell, etc.).
ClamAV: Pdf.Tool.Agent-1388586 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Tool.Agent-1388586
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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://cairographics.org

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0019_000.js` `e271af1fe882f25e71c0136c80c6d914955fdb8d192ba962f0956916ffcb28ab`	pdf-javascript-stream	PDF /JS object 19 at offset 0x64FB	63 bytes
`stream_003_off00001855.bin` `ab43ddc5844ad2af43a3dd77e320de690c0ccd4727e3403a5a33c28f6a16c3d4`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1855	37888 bytes
Detection ClamAV: Win.Trojan.Rozena-131 Obfuscation or payload: unlikely

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