MALICIOUS
638
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File
T1059.003 Windows Command Shell
T1140 Deobfuscate/Decode Files or Information
This PDF document exploits CVE-2010-1240 via a launch action targeting cmd.exe to execute a payload. The embedded executable payload and the heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggest the document is designed to trick the user into a financial scam. The embedded JavaScript and the PDF launch action indicate the primary goal is to download and execute a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
Heuristics 15
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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\\handbook.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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Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAMDocument repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
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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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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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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.suntrust.com/retirementsolutions In PDF document text
- http://www.discoverybenefits.com/In PDF document text
- http://www.cignabehavioral.com/In PDF document text
- http://www.cign.com/In PDF document text
- http://www.teldrug.com/In PDF document text
- http://www.mycigna.com/In PDF document text
- http://www.lifebenefits.com/In PDF document text
- http://dejavu.sourceforge.netFontsIn extracted file (font_01_sfnt_off0001acc6.bin)
- http://www.monotype.comhttp://www.monotype.com/html/type/license.htmlIn extracted file (font_05_sfnt_off00029adf.bin)
- http://www.netbenefits.fidelity.com/PDF link annotation
- http://www.unum.com/In PDF document text
- http://www.eyemedvisioncare.com/In PDF document text
- http://www.kaiserpermanente.org/In PDF document text
- http://www.cigna.com/In PDF document text
- http://www.CIGNA.com/In PDF document text
- http://www.cigna.com/healthyrewardsIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseDejaVuIn extracted file (font_01_sfnt_off0001acc6.bin)
- http://www.monotype.com/html/mtname/ms_couriernew.htmlhttp://www.monotype.com/html/mtname/ms_welcome.htmlNOTIFICATIONIn extracted file (font_05_sfnt_off00029adf.bin)
- http://www.monotype.com/html/mtname/ms_timesnewroman.htmlhttp://www.monotype.com/html/mtname/ms_welcome.htmlNOTIFICATIONIn extracted file (font_06_sfnt_off0002ba18.bin)
Extracted artifacts 10
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
handbook.pdf |
pdf-embedded-file | PDF EmbeddedFile object 273 at offset 0x3E530 | 37888 bytes |
SHA-256: 46654ef89d0a22bf10dc6d88ddb928f7352207a4d345cc1980ac5fb9b9e162c6 |
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Detection
ClamAV:
Win.Exploit.Countdown-1
Obfuscation or payload:
likely
actual_type=PE; declared_or_context_type=PDF; filename=handbook.pdf; kind=pdf-embedded-file Static shellcode analysis found candidate code region(s). Indicators: SC_PEB_ACCESS, SC_STR_GETPROCADDRESS, SC_STR_LOADLIBRARY Static shellcode analysis recovered API/import strings: GetProcAddress, ExitProcess, LoadLibraryA, VirtualAlloc
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javascript_obj0274_000.js |
pdf-javascript-stream | PDF /JS object 274 at offset 0x4341B | 57 bytes |
SHA-256: ff55c3569615905a49995e011f58a5f14b9bcd78f90366bfed8a0a3717ddaa0c |
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Preview scriptFirst 1,000 lines of the extracted script
this.exportDataObject({ cName: "handbook", nLaunch: 0 });
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font_00_sfnt_off0001a690.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1A690 | 1752 bytes |
SHA-256: 9fcdb1b7a215e5430ae526254077873a5f66f34e5546831704f970cbc3fe3f17 |
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font_01_sfnt_off0001acc6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1ACC6 | 33568 bytes |
SHA-256: 1595e16a4f9a0296195e8dc1865868585c10d52861edb7be5bd8d7bb46db92b6 |
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font_02_sfnt_off0001f5e7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1F5E7 | 27004 bytes |
SHA-256: 34b0487b9d5db5448761716fd39edac50b029d9a55416c4f3c80a2767672c1b9 |
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font_03_sfnt_off0002290d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x2290D | 31960 bytes |
SHA-256: daebbe6f5b3bb39df11cac5456a4dd34995b98a47d83eea0b3f52e995dd61225 |
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font_04_sfnt_off00026c0c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x26C0C | 25516 bytes |
SHA-256: 84c02ed1e82014a67a7bc68df43de9ea2cab3e3cffaf559b8eb8f98dc2c1ba23 |
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font_05_sfnt_off00029adf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x29ADF | 16476 bytes |
SHA-256: 4027f6d872dc004d25fac9306111c00201f60500e4898dfe0941d608ccc2a3e6 |
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font_06_sfnt_off0002ba18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x2BA18 | 46720 bytes |
SHA-256: 5d3b487106b60ccd273e9fbbc201f0d7bba5eba88fc208da91f96864df8478f7 |
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font_07_sfnt_off00033197.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x33197 | 21924 bytes |
SHA-256: 3a6f2930bb6cbd05763fa470b4e32e0c20dcc3efa4d1c4d37d1e60fd340f4b67 |
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