Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a2fee6f4825d342…

MALICIOUS

PDF

4.18 MB Created: 2009-09-02 14:40:30 -05:00 Authoring application: SPDF First seen: 2026-05-10
MD5: 67bc698daaf269dcbca91648a4649715 SHA-1: 04c08e50cda25bb6e3c7b6dfa32bce085ed94c6e SHA-256: 6a2fee6f4825d342730cf0b3c15973c03b947e5db0bf6adbea2b87019834ef61
518 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript that utilizes the exportDataObject function to launch cmd.exe. This command then attempts to execute an embedded file named 'teste33.pdf', which was identified as a Windows executable despite its PDF filename. This indicates a likely attempt to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

Heuristics 13

  • 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.
  • 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
  • /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\\teste33.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.
  • /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.
  • Suspicious extracted artifact medium 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 1 related finding PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.
  • 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://amplifier.ti.com)/S In PDF document text
    • http://dataconverter.ti.com)/SIn PDF document text
    • http://www.dlp.com)/SIn PDF document text
    • http://dsp.ti.com)/SIn PDF document text
    • http://interface.ti.com)/SIn PDF document text
    • http://logic.ti.com)/SIn PDF document text
    • http://power.ti.com)/SIn PDF document text
    • http://microcontroller.ti.com)/SIn PDF document text
    • http://www.ti-rfid.com)/SIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#In PDF document text
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#In PDF document text
    • http://ns.adobe.com/illustrator/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/t/pg/In PDF document text
    • http://ns.adobe.com/xap/1.0/sType/Dimensions#In PDF document text
    • http://ns.adobe.com/xap/1.0/g/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/photoshop/1.0/In PDF document text
    • http://ns.adobe.com/tiff/1.0/In PDF document text
    • http://ns.adobe.com/exif/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/g/img/In PDF document text
    • http://ns.adobe.com/xap/1.0/sType/Font#In PDF document text
    • http://ns.adobe.com/xap/1.0/sType/ManifestItem#In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://www.ti.com/audio)/SIn PDF document text
    • http://www.ti.com/automotive)/SIn PDF document text
    • http://www.ti.com/broadband)/SIn PDF document text
    • http://www.ti.com/digitalcontrol)/SIn PDF document text
    • http://www.ti.com/clocks)/SIn PDF document text
    • http://www.ti.com/medical)/SIn PDF document text
    • http://www.ti.com/military)/SIn PDF document text
    • http://www.ti.com/opticalnetwork)/SIn PDF document text
    • http://www.ti.com/security)/SIn PDF document text
    • http://www.ti.com/telephony)/SIn PDF document text
    • http://www.ti.com/video)/SIn PDF document text
    • http://www.ti.com/lprf)/SIn PDF document text
    • http://www.ti.com/wireless)/SIn PDF document text
    • http://amplifier.ti.comPDF link annotation

Extracted artifacts 21

Files carved from inside the sample during analysis.

FilenameKindSourceSize
teste33.pdf pdf-embedded-file PDF EmbeddedFile object 853 at offset 0x42A123 37888 bytes
SHA-256: 48b7f3c2e0e069cb78476fb3c726e2e2aeb648bc0fb1fbb6b8de25e120e8430c
Detection
ClamAV: Win.Trojan.Rozena-131
Obfuscation or payload: likely
actual_type=PE; declared_or_context_type=PDF; filename=teste33.pdf; kind=pdf-embedded-file 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_obj0854_000.js pdf-javascript-stream PDF /JS object 854 at offset 0x42EDF2 56 bytes
SHA-256: fcf34504212b35b8e242acd1ea236f411be6278b4dd5c9d2984c45fadadfcf88
Preview script
First 1,000 lines of the extracted script
this.exportDataObject({ cName: "teste33", nLaunch: 0 });
stream_121_off0029155f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x29155F 718768 bytes
SHA-256: e893e32fa5de4125f86c6eafdec4e6ac1a7a3939cfbbcd7c905638cf5c7e33b6
stream_124_off0040d328.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x40D328 19613 bytes
SHA-256: f78298db7b066c7a1024d189b3ea0f661f2162cfc6e9abdba1807256b1be7534
font_00_cff_off00003423.bin pdf-font-stream PDF embedded font (cff) at offset 0x3423 5419 bytes
SHA-256: c84f7cdb1e1d20b1e6f75e79ff3ec14381c65d3f31f7294de3994bf90000e632
font_01_cff_off004043fe.bin pdf-font-stream PDF embedded font (cff) at offset 0x4043FE 5066 bytes
SHA-256: eb3c5c838b4a7359cfc29e4e6245bd256929afb5a227ced861ea18cee63eb1f3
font_03_cff_off00412559.bin pdf-font-stream PDF embedded font (cff) at offset 0x412559 5104 bytes
SHA-256: 5978485639b24daba3f5344571cb6545dd5c83673ec706d8cebef87685311310
font_04_cff_off00413d6f.bin pdf-font-stream PDF embedded font (cff) at offset 0x413D6F 362 bytes
SHA-256: 69d566f67a084766e07c6d5f3d3cb871916c6a3695975645a94379b580fd0ea3
font_05_cff_off0041495c.bin pdf-font-stream PDF embedded font (cff) at offset 0x41495C 2079 bytes
SHA-256: 77cb47a3fc0486d3781fc0ed809b581a25f9b358e79e9dba976f2e5e83ce5707
font_06_cff_off00415a6c.bin pdf-font-stream PDF embedded font (cff) at offset 0x415A6C 3497 bytes
SHA-256: 86a2e003c5e11e5e2a9d5eda8c0b7d040f417f63e2863ab5561ca83fab8417bf
font_07_cff_off004174c7.bin pdf-font-stream PDF embedded font (cff) at offset 0x4174C7 513 bytes
SHA-256: de4c6a86ab173b5b4fa526c86fd481b5ee45be7eaa86f8c4610d1af9137885a8
font_08_cff_off00417af2.bin pdf-font-stream PDF embedded font (cff) at offset 0x417AF2 4962 bytes
SHA-256: f43f33b71cca1c7559d9baf27ade002081bc9f141cb18159b459b93d0f433cd5
font_09_cff_off00418c8a.bin pdf-font-stream PDF embedded font (cff) at offset 0x418C8A 3713 bytes
SHA-256: a43a4f197eefdeaa9dcab8f79cb9cddca837af6028743551191bb7749d542e59
font_10_cff_off00419b6a.bin pdf-font-stream PDF embedded font (cff) at offset 0x419B6A 3115 bytes
SHA-256: 5ddfaeeb3c5c7f417f9f06e33cc478afabf4c5936c2e36b0e0669c39863d8e1e
font_11_cff_off0041aab3.bin pdf-font-stream PDF embedded font (cff) at offset 0x41AAB3 4741 bytes
SHA-256: 25ef5c23eb7b2e922f8df5839fecfa15fadf55bcb6ee99c768db0cbb3c16693a
font_12_cff_off0041bf52.bin pdf-font-stream PDF embedded font (cff) at offset 0x41BF52 4960 bytes
SHA-256: 0a2cc6cdbb8b6a892c06915a2d0833b2f6b553ce4c63dad89e0237a5a559c508
font_13_cff_off0041d22c.bin pdf-font-stream PDF embedded font (cff) at offset 0x41D22C 3249 bytes
SHA-256: 2ef7a3eb343f138e0a33161e6bc4bc528765344f409ca30cf1108685522eeb95
font_14_sfnt_off0041e278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41E278 4830 bytes
SHA-256: 4f8e51fce2e91bbfb3d4db316e75ea96a03cdee62482deb9dd7884277e77d1fe
font_15_cff_off0041f2bb.bin pdf-font-stream PDF embedded font (cff) at offset 0x41F2BB 6033 bytes
SHA-256: 9984ac2d663ee71f5eb9f1d371244e8067eebb353de6c8505da228367df6f5f1
font_16_cff_off00420dc6.bin pdf-font-stream PDF embedded font (cff) at offset 0x420DC6 5441 bytes
SHA-256: 8ab3ad72b4bfa61997a1bff56efefa34a77f121f9cdb03c5482734f50a7558a4
font_17_cff_off0042253b.bin pdf-font-stream PDF embedded font (cff) at offset 0x42253B 5920 bytes
SHA-256: 3ce033da36ed8bc29b121c419aafccbfe88a886dfe1164afc6d200dc60238bc6