PDF malware analysis — malicious · f8f7998e693671f8

MALICIOUS

PDF

58.0 KB Created: 2010-09-14 14:30:10 +03:00 Authoring application: Writer (via OpenOffice.org 3.1)

MD5: 2480eedfacd7f5f0f5c661d4fce202b3 SHA-1: ea18d17b2d2b760dd9f8953fb4f91c64d4222d33 SHA-256: f8f7998e693671f85e6a2f315a4ef5099a19e3a4e24bf98dfa4bf02b31e0bca0

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. This is further supported by the critical heuristic firing for CVE-2010-1240, which specifically relates to Adobe Reader launch action command execution. The embedded PE payload and ClamAV detections confirm the malicious nature of the file, likely serving as a dropper for further malware.

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\\Statement.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0018_000.js` `742a6fd743e7d803e37554e868b8d5cfe3de66a91ee0c10fe77acaef98d0b460`	pdf-javascript-stream	PDF /JS object 18 at offset 0xE3DA	58 bytes
`stream_003_off00003775.bin` `fefb8306909a8f613d4f99800e2b066ace7cc5d8ede92d839a4bd17460ced4e6`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3775	73802 bytes
Detection ClamAV: Win.Trojan.Swrort-5710536-0 Obfuscation or payload: unlikely

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