Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e1b85884ae3cc9…

MALICIOUS

PDF

58.9 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) First seen: 2026-05-10
MD5: 5a9fad690c5bf764a36f6ca014c3b943 SHA-1: b78af0c371f5a832c7248a81b32dc3ab270a7110 SHA-256: f6e1b85884ae3cc9bbda448954b8031e41f93fb76f40d717fb87b18444e29f83
576 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information T1140 Deobfuscate/Decode Files or Information

The PDF file contains embedded JavaScript that utilizes the `exportDataObject` API, which is a known technique for dropping attachments. This is paired with a `/Launch` action targeting `cmd.exe`, indicating an attempt to execute arbitrary commands. The embedded artifact `form.pdf` is identified as a Windows executable by ClamAV, and the overall file is detected as `Pdf.Tool.Agent-1388586`. This suggests the document is designed to trick the user into opening a malicious executable disguised as a PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 12

  • 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.
  • ClamAV: Pdf.Tool.Agent-1388586 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Tool.Agent-1388586
  • 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.).
  • 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.
  • Suspicious extracted artifact critical 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.
  • /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 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
  • 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://www.zeustech.net/ Referenced by PDF JavaScript
    • http://]hostname[:port]/pathIn extracted file (form.pdf)
    • tcp://94.75.73.212:443In extracted file (form.pdf)
    • http://www.apache.org/Referenced by PDF JavaScript
    • http://www.iec.chIn extracted file (icc_00_off000002d6.icc)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
form.pdf pdf-embedded-file PDF EmbeddedFile object 21 at offset 0x3B9E 73802 bytes
SHA-256: f97854e60f9684378765df541e4324badeecbb8267db5d1a758afada7315c329
Detection
ClamAV: Win.Trojan.Swrort-5710536-0
Obfuscation or payload: likely
actual_type=PE; declared_or_context_type=PDF; filename=form.pdf; kind=pdf-embedded-file Static shellcode analysis recovered the Metasploit stager connect-back address: 94.75.73.212:443 (reverse/x86, public) Static shellcode analysis found candidate code region(s). Indicators: SC_PEB_ACCESS, SC_MSF_BIND, SC_PUSH_STRING Static shellcode analysis recovered API/import strings: kernel32.dll, advapi32.dll, KERNEL32.DLL, ADVAPI32.DLL, LoadLibraryA, GetProcAddress
javascript_obj0022_000.js pdf-javascript-stream PDF /JS object 22 at offset 0xE7EA 53 bytes
SHA-256: eff4a0943aaff2d99cb5c8666337775c91d4d5f687782df94d2c5fc77becde7f
Preview script
First 1,000 lines of the extracted script
this.exportDataObject({ cName: "form", nLaunch: 0 });
icc_00_off000002d6.icc pdf-icc-profile PDF ICC profile at offset 0x2D6 3144 bytes
SHA-256: 2b3aa1645779a9e634744faf9b01e9102b0c9b88fd6deced7934df86b949af7e
font_00_sfnt_off00000e23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23 13900 bytes
SHA-256: ac6efb60566e49cb2cc918348e471fe3f01c12322c4aa7ec58d84bf608cab323

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