Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a06d11de59550eb…

MALICIOUS

PDF

181.6 KB Created: çä-‹¬³åØÑB‚ûnè˜Îñ²Ã Authoring application: ƒ³oOW©¼;׌#Í©Äñøuyª˜|iÓØá (via â½mÔþå¡Ê§ÀD¢:MµÁÞô»Ýžݵ=Ҏlšð) First seen: 2026-05-11
MD5: acf7e963b85a8dc1ce78b0c16ee7082e SHA-1: 5ea56591b505cb84c84b8ef0c1654e02accef991 SHA-256: 4a06d11de59550eb4270190f3c5638ce6d82c69c76d587f9aa6527b03a1135d2
582 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript that triggers a launch action, specifically targeting cmd.exe. This action is designed to execute a payload disguised as 'akadimies_rules.pdf', which is actually a Windows executable. The embedded executable was detected by ClamAV as Win.Trojan.Swrort-5710536-0, indicating a trojan downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 13

  • 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\\akadimies_rules.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.
  • Encrypted PDF carries /JavaScript — payload hidden from static analysis high PDF_ENCRYPTED_WITH_JS
    PDF declares /Encrypt and also references an executable trigger (/JavaScript). Document encryption hides the JavaScript body and stream contents from static scanners — combined with auto-execution indicators this is a known evasion pattern used to deliver weaponised JavaScript that the analyst cannot inspect without the decryption key.
  • /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
  • Optional Content Group with action trigger low PDF_OPTIONAL_CONTENT
    Optional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
akadimies_rules.pdf pdf-embedded-file PDF EmbeddedFile object 42 at offset 0xB877 61440 bytes
SHA-256: c0b4a65c37aa3ccfba34483d1195a34bd51bd53ea8f3a2f8efcb9a61a1de5483
Detection
ClamAV: Win.Trojan.Swrort-5710536-0
Obfuscation or payload: likely
actual_type=PE; declared_or_context_type=PDF; filename=akadimies_rules.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: LoadLibraryA, GetProcAddress, CreateFileA, kernel32.dll, KERNEL32.DLL, CreateProcessA
javascript_obj0006_000.js pdf-javascript-stream PDF /JS object 6 at offset 0x158D 64 bytes
SHA-256: cc658177a4cf974331aef014f0b8aeafc28290812f5ee3cf4966bd8aa417e605
Preview script
First 1,000 lines of the extracted script
this.exportDataObject({ cName: "akadimies_rules", nLaunch: 0 });

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