PDF malware analysis — malicious · e956e2282f83b6f6

MALICIOUS

PDF

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

MD5: 402c4d22906ef506ae4757bf98ec78ee SHA-1: fc22acc9723054e325f8986aa61436d41463f338 SHA-256: e956e2282f83b6f6b00967827d0bce649967b4496646ebc88073f2b8dfe29c56

484 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment T1059 Command and Scripting Interpreter T1059.003 Command and Scripting Interpreter: Windows Command Shell T1566 Phishing T1566.002 Phishing: Spearphishing Attachment

The PDF file contains embedded JavaScript that utilizes the `this.exportDataObject` API, indicating an attempt to drop an attachment. This is paired with a `/Launch` action targeting `cmd.exe` with parameters that suggest changing directories and potentially executing the dropped file. The embedded artifact is identified as a Windows executable by ClamAV, confirming the malicious intent. The file is detected as `Pdf.Tool.Agent-1388586` by ClamAV, and the extracted payload is detected as `Win.Trojan.Swrort-5710536-0`.

Heuristics 11

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.).
Embedded attachment masquerades: declared document, content is windows-executable critical PDF_EMBEDDED_FILESPEC_CONTENT_MISMATCH

An /EmbeddedFile attachment's declared filename extension or /Subtype MIME type contradicts the magic bytes of its decompressed content. The attachment is declared as a benign document or image but the bytes are an executable or executable-bearing archive. This is a deliberate deception used to hide droppers in PDF attachments and is a generic indicator of embed-and-drop weaponisation, independent of any specific CVE.
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.
/Launch action paired with attachment-dropping JS API high PDF_LAUNCH_PLUS_DROPPER_JS

PDF combines a /Launch action with a JavaScript API call that writes or opens an attached/external resource — the canonical shape of the CVE-2010-1240 /Launch + exportDataObject family. Benign PDFs do not pair these surfaces; the combination indicates a drop-and-execute chain regardless of the specific JS API knobs or /Launch target.
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
`Statement.pdf` `4fa3a2e1df2b81198bf6033e67d725af1033eaaa539f79002bebd47cf9a7cb33`	pdf-embedded-file	PDF EmbeddedFile object 17 at offset 0x3775	73802 bytes
Detection ClamAV: Win.Trojan.Swrort-5710536-0 Obfuscation or payload: unlikely
`javascript_obj0018_000.js` `742a6fd743e7d803e37554e868b8d5cfe3de66a91ee0c10fe77acaef98d0b460`	pdf-javascript-stream	PDF /JS object 18 at offset 0xE3E1	58 bytes

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