MALICIOUS
576
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
T1105 Ingress Tool Transfer
The PDF file contains JavaScript that triggers a launch action, executing cmd.exe. This action is designed to export an embedded Windows executable disguised as 'AirFrance.pdf'. The embedded executable was detected by ClamAV as Win.Trojan.Swrort-5710536-0, indicating it's a malicious payload. The overall attack pattern suggests a spearphishing attachment designed to deliver a trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
Heuristics 13
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Adobe Reader Launch action command execution critical CVE exact CVE_2010_1240PDF 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.
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ClamAV: Pdf.Tool.Agent-1388586 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Tool.Agent-1388586
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Launch action critical PDF_LAUNCHPDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
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Embedded Windows executable payload in PDF stream critical PDF_EMBEDDED_PE_PAYLOADPDF 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.
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/Launch action target: cmd.exe critical PDF_LAUNCH_COMMANDPDF /Launch action specifies an executable target with parameters '/Q /C %HOMEDRIVE%&cd %HOMEPATH%&(if exist "Desktop\\AirFrance.pdf" (cd "Desktop"' — references a known-dangerous executable (cmd, PowerShell, etc.).
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Embedded attachment masquerades: declared document, content is windows-executable critical PDF_EMBEDDED_FILESPEC_CONTENT_MISMATCHAn /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.
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/Launch action paired with attachment-dropping JS API high PDF_LAUNCH_PLUS_DROPPER_JSPDF 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.
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LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMANDExtracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGEOne 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.
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JavaScript action low 1 related finding PDF_JAVASCRIPTPDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Embedded file low PDF_EMBEDDEDPDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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Embedded URL info EMBEDDED_URLOne 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 (AirFrance.pdf)
- https://www.airfrance.fr/cgi-bin/AF/FR/fr/local/resainfovol/achat/PaiemIn PDF document text
- http://www.apache.org/Referenced by PDF JavaScript
Extracted artifacts 8
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
AirFrance.pdf |
pdf-embedded-file | PDF EmbeddedFile object 50 at offset 0x130A9 | 73802 bytes |
SHA-256: 573c1c7d2e602a63175e416158ea05f0434919f49fa12a142c78b703d1103c3c |
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Detection
ClamAV:
Win.Trojan.Swrort-5710536-0
Obfuscation or payload:
likely
actual_type=PE; declared_or_context_type=PDF; filename=AirFrance.pdf; kind=pdf-embedded-file Static shellcode analysis found candidate code region(s). Indicators: SC_PEB_ACCESS, SC_STR_GETPROCADDRESS Static shellcode analysis recovered API/import strings: kernel32.dll, advapi32.dll, KERNEL32.DLL, ADVAPI32.DLL, LoadLibraryA, GetProcAddress
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javascript_obj0051_000.js |
pdf-javascript-stream | PDF /JS object 51 at offset 0x1DD82 | 58 bytes |
SHA-256: a505117b12b6e2a37bb474ed31e3c08cb64a035ca61e82186d93bf620b557aa8 |
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Preview scriptFirst 1,000 lines of the extracted script
this.exportDataObject({ cName: "AirFrance", nLaunch: 0 });
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stream_008_off0000900a.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x900A | 29771 bytes |
SHA-256: e29c90050edd1d68bd2f8a5db91b0a41caeb6cba3b91669d164fc6b75606507e |
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font_00_sfnt_off000044e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x44E8 | 8004 bytes |
SHA-256: 6464a3250425a274fb5721d61a173ae0e617e43106ba68b24ead97e6775c6fa0 |
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font_01_sfnt_off00005557.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5557 | 13976 bytes |
SHA-256: d6211a7e046695cb32a4150536c9867442d4cd49a05c25107771c0bb563a71cd |
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font_02_sfnt_off0000745d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x745D | 13680 bytes |
SHA-256: 7ca5be7dc78189f1f16272131fd1885d92f23500fa011deabd95f1b3adff9cf5 |
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font_04_cff_off0000cd04.bin |
pdf-font-stream | PDF embedded font (cff) at offset 0xCD04 | 28461 bytes |
SHA-256: 7afb9724c257779c90138b2e449036dfa6345e2c4a10654f3e12fea4a8444e25 |
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font_05_cff_off00010a17.bin |
pdf-font-stream | PDF embedded font (cff) at offset 0x10A17 | 4371 bytes |
SHA-256: 936ba1d3029c33ba0d8950e85b87eef5841c92972eb35f758dbdb68fba0301e7 |
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