PDF malware analysis — malicious · 7e2f538483ee6bd4

MALICIOUS

PDF

107.6 KB Authoring application: cairo 1.12.16 (http://cairographics.org

MD5: 3accdf865b28c46e18aee795a1bc60c0 SHA-1: c39ad6856d5defde4c2930296aa4680e28222588 SHA-256: 7e2f538483ee6bd4fd92aaa4a290dc513d76f8989ac54f9984377795d6e9dc0b

404 Risk Score

Malware Insights

MITRE ATT&CK

T1204 User Execution T1204.002 Malicious File T1059 Command and Scripting Interpreter T1059.003 Windows Command Shell T1566 Phishing T1566.001 Spearphishing Attachment

The PDF file contains a JavaScript action and an embedded executable payload, indicating a malicious intent to execute arbitrary code. Specifically, a CVE-2010-1240 exploit is used to launch cmd.exe, which in turn likely executes the embedded PE payload. The embedded artifact was detected as Win.Trojan.Swrort-5710536-0 by ClamAV, and the PDF itself was flagged as Pdf.Tool.Agent-1388586. The PDF's structure and size are consistent with a phishing lure.

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\\boleto.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.
Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE

PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 107 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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_obj0014_000.js` `6a993406aa2b91bf5279211474dc424c7d38d68b2e42401f393eed73835a572f`	pdf-javascript-stream	PDF /JS object 14 at offset 0x1A982	55 bytes
`stream_001_off0000fc6c.bin` `979dd68de10cbe882fa8c2361fdeb847262b3170aa3877bad3a9513ca706a531`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xFC6C	73802 bytes
Detection ClamAV: Win.Trojan.Swrort-5710536-0 Obfuscation or payload: unlikely

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