Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2160dd847bfb69c…

MALICIOUS

PDF

1.64 MB Created: 2009-09-29 17:07:39 Authoring application: Microsoft® Office Word 2007 First seen: 2026-05-11
MD5: da1d7f6726932979b0864d88bc7c92aa SHA-1: dfdbac878f76aaa81a11b655d587fd13c34edc21 SHA-256: d2160dd847bfb69cf80e174c4080247efa2f5a349d00e0746a9bf03d11bddbe3
818 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript that utilizes the `exportDataObject` function, which is known to be used for dropping and launching embedded files. The heuristics indicate a critical chain of events including a launch action targeting `cmd.exe`, an embedded PE payload, and a mismatch between the declared file type ('FDCC.pdf') and its actual content (a Windows executable). This strongly suggests the PDF is a dropper for a malicious executable, likely exploiting CVE-2010-1240 and CVE-2023-26369 related vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9723

Heuristics 18

  • 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.
  • TrueType bitmap font + active content — CVE-2023-26369 related high CVE related PDF_CVE_2023_26369_RELATED
    PDF embeds a TrueType font with bitmap tables (EBDT/sbix/CBDT) alongside exploit delivery indicators — CVE-2023-26369 exploits the sfac_GetSbitBitmap function in Adobe's libCoolType for arbitrary code execution. This CVE was actively exploited in the wild, but this rule does not validate the malformed EBLC/EBDT primitive.
  • 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\\FDCC.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.
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document 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.
  • Suspicious extracted artifact critical 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 2 related findings PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER
    PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
  • 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.
  • /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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One 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.cnss.gov/Assets/pdf/cnssi_4009.pdf In PDF document text
    • tcp://192.168.1.4:443In extracted file (FDCC.pdf)
    • http://ocsp.verisign.com0In extracted file (font_00_sfnt_off00151479.bin)
    • http://www.monotype.comMonotypeIn extracted file (font_02_sfnt_off0015852a.bin)
    • http://checklists.nist.gov/PDF link annotation
    • http://www.acquisition.gov/far/current/html/FARTOCP39.htmlIn PDF document text
    • http://fdcc.nist.gov/In PDF document text
    • http://scap.nist.gov/In PDF document text
    • http://nvd.nist.gov/home.cfm?emaillistIn PDF document text
    • http://nvd.nist.gov/scap/xccdf/docs/xccdf-spec-1.1.4-20071102.pdfIn PDF document text
    • http://oval.mitre.org/In PDF document text
    • http://nvd.nist.gov/fdcc/fdcc_faq.cfmIn PDF document text
    • http://www.whitehouse.gov/omb/assets/omb/memoranda/fy2008/m08-22.pdfIn PDF document text
    • http://nvd.nist.gov/In PDF document text
    • http://ovaldi.wiki.sourceforge.net/In PDF document text
    • http://checklists.nist.govPDF link annotation
    • http://checklists.nist.gov/.8In PDF document text
    • http://csrc.nist.gov/In PDF document text
    • http://www.us-cert.gov/In PDF document text
    • http://www.cert.org/In PDF document text
    • http://frwebgate.access.gpo.gov/cgi-In PDF document text
    • http://csrc.nist.gov/drivers/documents/FISMA-final.pdfIn PDF document text
    • http://www.whitehouse.gov/omb/circulars/a130/a130trans4.pdfIn PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-14/800-14.pdfIn PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-In PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-28-ver2/SP800-28v2.pdfIn PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-30/sp800-30.pdfIn PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-36/NIST-SP800-36.pdfIn PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-40-Ver2/SP800-40v2.pdfIn PDF document text
    • http://csrc.nist.gov/publications/PubsSPs.htmlIn PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-44-ver2/SP800-44v2.pdfIn PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-45-version2/SP800-45v2.pdfIn PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-46-rev1/sp800-46r1.pdfIn PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-48-rev1/SP800-48r1.pdfIn PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-53-Rev3/sp800-53-rev3-final-In PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-61-rev1/SP800-61rev1.pdfIn PDF document text
    • http://csrc.nist.gov/itsec/guidance_WinXP.htmlIn PDF document text
    • http://csrc.nist.gov/itsec/guidance_WinXP_Home.htmlIn PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-83/SP800-83.pdfIn PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-97/SP800-97.pdfIn PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-115/SP800-115.pdfIn PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-123/SP800-123.pdfIn PDF document text
    • http://csrc.nist.gov/publications/fips/fips199/FIPS-PUB-199-final.pdfIn PDF document text
    • https://iase.disa.mil/techguid/stigs.htmlIn PDF document text
    • http://iase.disa.mil/stigs/index.htmlIn PDF document text
    • http://oai.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=ADA393328In PDF document text
    • http://www.nsa.gov/ia/In PDF document text
    • http://nvd.nist.gov/scap/content/SCAP-In PDF document text
    • http://nvd.nist.gov/fdcc/fdcc-files-In PDF document text
    • http://csrc.nist.gov/publications/nistpubs/800-53-Rev3/sp800-53-rev3-final-errata.pdfIn PDF document text
    +28 more URL(s)

Extracted artifacts 12

Files carved from inside the sample during analysis.

FilenameKindSourceSize
FDCC.pdf pdf-embedded-file PDF EmbeddedFile object 3766 at offset 0x19F0E6 37888 bytes
SHA-256: 9ec07804db9d60e32fe79f7b62618e54dd20ee6548ed37771c9599afbb247750
Detection
ClamAV: Win.Trojan.Rozena-131
Obfuscation or payload: likely
actual_type=PE; declared_or_context_type=PDF; filename=FDCC.pdf; kind=pdf-embedded-file Static shellcode analysis recovered the Metasploit stager connect-back address: 192.168.1.4:443 (reverse/x86, lab (non-routable)) 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
javascript_obj3767_000.js pdf-javascript-stream PDF /JS object 3767 at offset 0x1A3DA0 53 bytes
SHA-256: 68c0a333ba51942446a6cbf0932d03ca57378e6a0749b452a9c19b5678e5b15a
Preview script
First 1,000 lines of the extracted script
this.exportDataObject({ cName: "FDCC", nLaunch: 0 });
stream_106_off0017e28f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x17E28F 24176 bytes
SHA-256: e772c4b6d5ed1efdd050699dff6c1afc179da174775b584be47aab00a5e3ce09
font_00_sfnt_off00151479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151479 45724 bytes
SHA-256: e26db989020d7cec108cb2ad8465e80d95a04c62bcadda7226c318329a57302f
font_01_sfnt_off00155a61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155A61 36592 bytes
SHA-256: b50c1a549a08d99e8db54726fd71b21dff2b78d681adfab608cf5c6a01b8ffd3
font_02_sfnt_off0015852a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15852A 93072 bytes
SHA-256: fbc30a1985666282507f42404b3511cd5ac5986039f506f4f054a3a032e4fd78
font_03_sfnt_off0015ec77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EC77 99100 bytes
SHA-256: fd0770a57e941e3ef37679d277a43db9bce761cc21c279002cffb3941b4e3995
font_04_sfnt_off001668ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1668BA 118448 bytes
SHA-256: 3c4de9631d66ea418d3402bfdf760b9ef3ec5abead4da0b6c6e54ad058e6e2bd
font_05_sfnt_off00171d6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171D6A 82460 bytes
SHA-256: 8f4fdaa9b2d6930ae59fe303c02f01c1b88a1bf98dbef018f040f38aa316f86e
font_06_sfnt_off0017c360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C360 18672 bytes
SHA-256: 9b48b0f53a0f1e916e6fc632547308d3eef6309d976c5d5897c08d7f8c9f0eb4
font_08_sfnt_off00180bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x180BB4 56644 bytes
SHA-256: 5f7f4937a3da65581e40953e0db370a39849c8eeec0cebecbf1d3321393440d7
font_09_sfnt_off00184e71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x184E71 65172 bytes
SHA-256: 2428e71c93d44987f7ee9a5cd94b95a9371066f80b64b9c13e375683dfe7c3ef