MALICIOUS
526
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File
T1566.002 Spearphishing Attachment
T1059.003 Windows Command Shell
T1105 Ingress Tool Transfer
This PDF file contains an embedded Windows executable disguised as 'trabalho.pdf'. It utilizes a launch action to execute 'cmd.exe' with parameters that facilitate the execution of the embedded payload, exploiting CVE-2010-1240. The embedded executable was detected by ClamAV as 'Win.Trojan.Swrort-5710536-0', and the PDF itself was flagged as 'Pdf.Tool.Agent-1388586'. The document also includes a lure to copy/paste content into a command-line context.
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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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\\trabalho.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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ClamAV: Pdf.Tool.Agent-1388586 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Tool.Agent-1388586
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ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAVClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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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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Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LUREDocument tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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JavaScript action low 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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Suspicious extracted artifact info 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.
Extracted artifacts 9
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
trabalho.pdf4cee5b589d65fb4f966cfd5543e9e2da9a6b3dd394bead7eab1334cbdface916 |
pdf-embedded-file | PDF EmbeddedFile object 81 at offset 0x21B0C | 73802 bytes |
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Detection
ClamAV:
Win.Trojan.Swrort-5710536-0
Obfuscation or payload:
unlikely
|
|||
javascript_obj0082_000.js2db2704459ad641aa6e37b2afeb80ee5baa2e80af805b320824f8abe09b3a351 |
pdf-javascript-stream | PDF /JS object 82 at offset 0x2C717 | 57 bytes |
stream_017_off000104b4.bin26a71e142aed3793e1567c1cd7932c29c78ce859fef68fe1f4ac69f3e543d1a9 |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x104B4 | 2322 bytes |
font_00_type1_off0000f6ee.bin18b062a0e755cd48b455895c6b0598b7cbc6a2a955d3e0929fe3f283323a7580 |
pdf-font-stream | PDF embedded font (type1) at offset 0xF6EE | 1927 bytes |
font_01_type1_off0000fde0.bin0dbb7d8b4f848cec73b68a0cd7bedcf51a754560845eb1401ea99a10c1889529 |
pdf-font-stream | PDF embedded font (type1) at offset 0xFDE0 | 1891 bytes |
font_03_type1_off00010d33.bincf93697a9d48dd1afad0711ea43252ceb95e7d92a10a5f7b7c6f5d91c4181c9b |
pdf-font-stream | PDF embedded font (type1) at offset 0x10D33 | 1887 bytes |
font_04_type1_off00015b01.bin016cf7af4e3d3b3c137ed1b7e9a37ef787a61096b467750bf877df3d3c35e384 |
pdf-font-stream | PDF embedded font (type1) at offset 0x15B01 | 17707 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact entropy is 7.88, consistent with packed or encrypted content.
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font_05_type1_off0001a052.bin21faa150f781d8f20df7402576cf38c3ffc143569f9192f79d4d164b1cb5599f |
pdf-font-stream | PDF embedded font (type1) at offset 0x1A052 | 8852 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact entropy is 7.64, consistent with packed or encrypted content.
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font_06_type1_off0001c06e.bind81c70e8581ae4107eff4fe0a39a7997de293fc65990367ae8513fd2a662b3d6 |
pdf-font-stream | PDF embedded font (type1) at offset 0x1C06E | 20693 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact entropy is 7.90, consistent with packed or encrypted content.
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