PDF malware analysis — malicious · f8e116646cdfaf9b

MALICIOUS

PDF

3.8 KB Created: 2026-03-29 23:40:35 +00:00 Authoring application: (unspecified) (via ReportLab PDF Library - (opensource)) First seen: 2026-06-12

MD5: 1792df846c88b82ab37874e8c9776f5d SHA-1: f8c0913d86d22fb1913b588803378c3489bc7c9c SHA-256: f8e116646cdfaf9badfa798f7eaf2488660cce3f2c2e47a849edb9c81c1e9175

414 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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\\AeroTech_Original.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.
/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.
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
JavaScript action low 1 related finding 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
`AeroTech_Original.pdf`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x8E9	7168 bytes
SHA-256: `f70db779419fc68821f8c43f2658d2ef078374c446c6932e1f1a0aceee49c91b`
Detection ClamAV: No threats found Obfuscation or payload: likely actual_type=PE; declared_or_context_type=PDF; filename=AeroTech_Original.pdf; kind=pdf-embedded-file Static shellcode analysis found candidate code region(s). Indicators: SC_STR_VIRTUALPROTECT, SC_PEB_ACCESS, SC_PUSH_STRING Static shellcode analysis recovered API/import strings: kernel32.dll, KERNEL32.DLL, VirtualProtect
`javascript_obj0004_000.js`	pdf-javascript-stream	PDF /JS object 4 at offset 0x1B1	66 bytes
SHA-256: `6a5266894fe54a8ffe6385180e0c5b43d3c71c46317c65b6b014574b74bfa162`
Preview script First 1,000 lines of the extracted script this.exportDataObject({ cName: "AeroTech_Original", nLaunch: 0 });

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