Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ebc47fb4f2fc3b3…

MALICIOUS

PDF

45.7 KB Created: 2010-06-23 12:02:24 UTC Authoring application: Writer (via OpenOffice.org 3.1) First seen: 2026-05-10
MD5: 75a7066687a015a3a9cee438f31b9819 SHA-1: b7897394a8b9de7c0a79696c0b6fc6848bc2fe5e SHA-256: 2ebc47fb4f2fc3b36072770e693fa8c6da585fe3d42600a0fd5670beafdfdf97
536 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.003 Windows Command Shell T1566.002 Spearphishing Attachment

The PDF file contains embedded JavaScript and a launch action that targets cmd.exe, indicating an attempt to execute a payload. The critical heuristic PDF_EMBEDDED_PE_PAYLOAD confirms an embedded Windows executable disguised as 'aq.pdf'. This executable was detected by ClamAV as 'Win.Trojan.Rozena-131', and the PDF itself as 'Pdf.Tool.Agent-1388586'. The exploit CVE_2010_1240 is specifically noted for this type of chained attack.

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\\aq.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
  • 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.webwar.in/love.exe��@ In extracted file (aq.pdf)

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
aq.pdf pdf-embedded-file PDF EmbeddedFile object 22 at offset 0x6468 37888 bytes
SHA-256: 6e4f0957b58cd14a2498e05cd48bc53a840f4cf2564c81e218a6bdef3d2d4e7a
Detection
ClamAV: Win.Trojan.Rozena-131
Obfuscation or payload: likely
actual_type=PE; declared_or_context_type=PDF; filename=aq.pdf; kind=pdf-embedded-file Static shellcode analysis found candidate code region(s). Indicators: SC_PEB_ACCESS, SC_STR_GETPROCADDRESS, SC_STR_LOADLIBRARY Static shellcode analysis recovered API/import strings: GetProcAddress, ExitProcess, LoadLibraryA, VirtualAlloc
javascript_obj0023_000.js pdf-javascript-stream PDF /JS object 23 at offset 0xB28B 51 bytes
SHA-256: 3ad48eb90b69e8dc67c3458fb3e907a3d444c71c9d0487b64bcf1a82803eb910
Preview script
First 1,000 lines of the extracted script
this.exportDataObject({ cName: "aq", nLaunch: 0 });
font_00_sfnt_off000005db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB 21584 bytes
SHA-256: 91187a4d5eaf4d644a632264e767894835ce1219325c96abd7efd52f367086b3
font_01_sfnt_off00003e34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E34 11956 bytes
SHA-256: 995ca6a456ca3e230cb9afc6483918f99984b1e2f56b4f2227935b268b31f315

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