PDF malware analysis — malicious · d999c56c4785289a

MALICIOUS

PDF

59.1 KB Created: 2009-08-30 00:20:17 UTC Authoring application: AdobePS5.dll Version 5.2.2 (via Mac OS X 10.5.8 Quartz PDFContext)

MD5: 3e18848a1658a0b67f0c69a8ddf07f94 SHA-1: e94fe8aa1d96e4f25d7d66eacb645fed1ca74d8b SHA-256: d999c56c4785289a58323a53b885e8497214a529f91419abe30d7b327a7c830a

384 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.003 Windows Command Shell T1566.001 Spearphishing Attachment

This PDF document contains a critical PDF_LAUNCH heuristic firing, indicating it attempts to execute cmd.exe with specific parameters. This is further supported by the CVE_2010_1240 technique, which specifically targets Adobe Reader launch action command execution. The presence of an embedded PE executable payload and ClamAV detections (Win.Trojan.Swrort-5710536-0 and Pdf.Tool.Agent-1388586) strongly suggest that the document is designed to deliver and execute malware. The embedded JavaScript and the PE payload are likely responsible for the second-stage infection.

Heuristics 9

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\\form.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0022_000.js` `eff4a0943aaff2d99cb5c8666337775c91d4d5f687782df94d2c5fc77becde7f`	pdf-javascript-stream	PDF /JS object 22 at offset 0xE89C	53 bytes
`stream_003_off00003b9e.bin` `2f2d4866d653d39e1aa5bd64905d80bd41bacc527d07cc873860a9289237c362`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3B9E	73802 bytes
Detection ClamAV: Win.Trojan.Swrort-5710536-0 Obfuscation or payload: unlikely
`icc_00_off000002d6.icc` `2b3aa1645779a9e634744faf9b01e9102b0c9b88fd6deced7934df86b949af7e`	pdf-icc-profile	PDF ICC profile at offset 0x2D6	3144 bytes

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