Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8f7998e693671f8…

MALICIOUS

PDF

58.0 KB Created: 2010-09-14 14:30:10 +03:00 Authoring application: Writer (via OpenOffice.org 3.1) First seen: 2026-05-10
MD5: 2480eedfacd7f5f0f5c661d4fce202b3 SHA-1: ea18d17b2d2b760dd9f8953fb4f91c64d4222d33 SHA-256: f8f7998e693671f85e6a2f315a4ef5099a19e3a4e24bf98dfa4bf02b31e0bca0
536 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.003 Windows Command Shell T1105 Ingress Tool Transfer

The PDF file contains embedded JavaScript and a launch action that targets cmd.exe, indicating an attempt to execute arbitrary commands. This is further supported by the critical heuristic firing for CVE-2010-1240, which specifically relates to Adobe Reader launch action command execution. The embedded PE payload and ClamAV detections confirm the malicious nature of the file, likely serving as a dropper for further malware.

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\\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.
  • /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.zeustech.net/ Referenced by PDF JavaScript
    • http://]hostname[:port]/pathIn extracted file (Statement.pdf)
    • http://www.monotype.comhttp://www.monotype.com/html/type/license.htmlIn extracted file (font_00_sfnt_off00000114.bin)
    • http://www.apache.org/Referenced by PDF JavaScript
    • http://www.monotype.com/html/mtname/ms_timesnewroman.htmlhttp://www.monotype.com/html/mtname/ms_welcome.htmlNOTIFICATIONIn extracted file (font_00_sfnt_off00000114.bin)
🗂 Part of campaign: shared payload 742a6fd743 4 samples

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
Statement.pdf pdf-embedded-file PDF EmbeddedFile object 17 at offset 0x3775 73802 bytes
SHA-256: fefb8306909a8f613d4f99800e2b066ace7cc5d8ede92d839a4bd17460ced4e6
Detection
ClamAV: Win.Trojan.Swrort-5710536-0
Obfuscation or payload: likely
actual_type=PE; declared_or_context_type=PDF; filename=Statement.pdf; kind=pdf-embedded-file Static shellcode analysis found candidate code region(s). Indicators: SC_PEB_ACCESS, SC_MSF_BIND, SC_STR_GETPROCADDRESS Static shellcode analysis recovered API/import strings: kernel32.dll, advapi32.dll, KERNEL32.DLL, ADVAPI32.DLL, LoadLibraryA, GetProcAddress
javascript_obj0018_000.js pdf-javascript-stream PDF /JS object 18 at offset 0xE3DA 58 bytes
SHA-256: 742a6fd743e7d803e37554e868b8d5cfe3de66a91ee0c10fe77acaef98d0b460
Preview script
First 1,000 lines of the extracted script
this.exportDataObject({ cName: "Statement", nLaunch: 0 });
font_00_sfnt_off00000114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114 23912 bytes
SHA-256: da0cd60a27814fd98356913ce517a43741e84dcccf00e36151cdef4893d5096d

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