MALICIOUS
558
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
The PDF contains JavaScript that utilizes the `exportDataObject` function to launch `cmd.exe` and execute a command. This command likely attempts to execute the embedded artifact, named 'MapeamentoOR.pdf' but detected as a Windows executable, which is a critical finding. The embedded artifact was also detected by ClamAV as 'Win.Trojan.Rozena-131'. The overall attack pattern suggests a malicious document designed to exploit a PDF vulnerability for initial execution of a payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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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/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\\MapeamentoOR.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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Suspicious extracted artifact critical 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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/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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Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASIONPDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
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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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External URI info PDF_URIPDF contains an external URL action
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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.submarino.com.br/imports_bio.asp?Query=ProductPage&ProdTypeId=9&ArtistId=3058701&Type=1 In PDF document text
- tcp://187.41.118.201:4455In extracted file (MapeamentoOR.pdf)
- http://java.sun.com/blueprints/corej2eepatterns/Patterns/index.htmlPDF link annotation
- http://www.microsoft.com/typography/ctfontshttp://fontfabrik.comYouIn extracted file (stream_201_off0003f0d8.bin)
Extracted artifacts 8
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
MapeamentoOR.pdf |
pdf-embedded-file | PDF EmbeddedFile object 498 at offset 0x51F41 | 37888 bytes |
SHA-256: 5eaa2d84025dc4d6c3bdfc95a0fdb1ba78f24ba267d2525ca03fd9b09ea1e86f |
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Detection
ClamAV:
Win.Trojan.Rozena-131
Obfuscation or payload:
likely
actual_type=PE; declared_or_context_type=PDF; filename=MapeamentoOR.pdf; kind=pdf-embedded-file Static shellcode analysis recovered the Metasploit stager connect-back address: 187.41.118.201:4455 (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: GetProcAddress, ExitProcess, LoadLibraryA, VirtualAlloc
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javascript_obj0499_000.js |
pdf-javascript-stream | PDF /JS object 499 at offset 0x56BF6 | 61 bytes |
SHA-256: 6e3de7f362bd4adf3c53647964f6d12f5c0829dc3097a905e62e72e86d993ac6 |
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Preview scriptFirst 1,000 lines of the extracted script
this.exportDataObject({ cName: "MapeamentoOR", nLaunch: 0 });
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stream_201_off0003f0d8.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x3F0D8 | 37680 bytes |
SHA-256: 35883d8e8f4756d6af4868ddee6e51d6b2654c675d7d3bf02e6d6692c390b3fa |
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font_00_sfnt_off00034dfe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x34DFE | 35532 bytes |
SHA-256: 04e81858ca8fcf343e85c3a6b114f1a2b55813a6216ea5d423f63cff691b7730 |
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font_01_sfnt_off0003aaff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x3AAFF | 28948 bytes |
SHA-256: e415a75af9e1f78ee4199d613ab31522059b38c9b2ebc6c4192fa0adb172f51f |
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font_03_sfnt_off00044223.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x44223 | 20864 bytes |
SHA-256: 8f6f5e5f466f102868ae4d3f5dbeb4d1e4712d7f173a073959a5d736c74edf5f |
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font_04_sfnt_off00046d1a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x46D1A | 28408 bytes |
SHA-256: 14f8fe4640cfd87184f2d5dc22475abdc99ba8455ad5472bb448d0d467847381 |
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font_05_sfnt_off0004a800.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4A800 | 22472 bytes |
SHA-256: 3861ed4e55bb7b806b2db4a991fd18c0b4d1a947587e4d627639867e7b5c7e89 |
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