Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f67d5d74be4b96e…

MALICIOUS

PDF

1.44 MB Created: 2007-03-22 10:00:19 +11:00 Authoring application: PScript5.dll Version 5.2.2 (via Acrobat Distiller 6.0.1 (Windows))
MD5: 0b41ab66476e2141268bbec37449ac48 SHA-1: cd92979b070f0010624eb0b2067a425ea7b83d6a SHA-256: 6f67d5d74be4b96efd1b6391e950dbfd5b18ef5ece4975856f79d6d30dc52712
214 Risk Score

Malware Insights

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

This PDF document contains JavaScript that utilizes eval() and String.fromCharCode() to obfuscate its actions, a common technique for exploiting PDF vulnerabilities. The script constructs a URL, likely for downloading a second-stage payload, and the document's content suggests an advance-fee scam. The embedded JavaScript is designed to exploit PDF reader vulnerabilities, leading to the execution of malicious code.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9284

Heuristics 10

  • 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.
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • JavaScript action low 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
  • Additional-actions dictionary low PDF_AA
    PDF defines /AA (Additional Actions) that references an executable action (JS/JavaScript/Launch/SubmitForm) — can auto-trigger on document or widget events. Form-field calc/format/validate/keystroke handlers in legitimate interactive forms commonly fire this, so it is reported as a low-weight signal; weaponised auto-execution is flagged by stronger rules (PDF_OPENACTION, encrypted-with-JS, etc.)
  • String.fromCharCode low PDF_FROMCHARCODE
    String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
  • Suspicious extracted artifact info 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.
  • 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.color.org
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/iX/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://purl.org/dc/elements/1.1/

Extracted artifacts 22

Files carved from inside the sample during analysis.

FilenameKindSourceSize
PM.joboptions
5cf97cfee76c3bcd5d889b3138e05d6571e7d097b173dd3eee4be6813c9dd743		 pdf-embedded-file PDF EmbeddedFile object 286 at offset 0x11F26C 12758 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 12 long base64-like blob(s).
javascript_obj0076_003.js
a5f5009227761230d839f919a5aa1e9f40b9c1b147491e759937ef82d3cd3869		 pdf-javascript-stream PDF /JS object 76 at offset 0x7040 5775 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 eval/decoder/string-building token(s).
stream_132_off0012f001.bin
ea7c22bf258013d88dc4fbac5db0c19406c9156e694a3c273eb86c8ec652c23c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12F001 5491 bytes
font_00_cff_off00123662.bin
f48d5dbacea57fca93af784acb2a0e2cf9e7671a3148cc6d71105d38f51dffa9		 pdf-font-stream PDF embedded font (cff) at offset 0x123662 7516 bytes
font_01_cff_off00124eda.bin
5fe5444d220c0637fe39595be88dc6481406134a7163fd35a46204e50f4e9c44		 pdf-font-stream PDF embedded font (cff) at offset 0x124EDA 10215 bytes
font_02_cff_off00126eb6.bin
4abd877f974796feeddb3585e3d135e071ac4bafa6b070cb02efd181aa364e6d		 pdf-font-stream PDF embedded font (cff) at offset 0x126EB6 4771 bytes
font_03_cff_off00127e34.bin
2e36624526c529ff90819ca5f054b8e0f89abb6145e12023180a87d7ac7b61f1		 pdf-font-stream PDF embedded font (cff) at offset 0x127E34 5292 bytes
font_04_cff_off00129004.bin
ea5d46d1d4b43ba8bf5a5b210b7b88e58b83cf3eb801317f79e4493423d8a5ff		 pdf-font-stream PDF embedded font (cff) at offset 0x129004 8141 bytes
font_05_cff_off0012a912.bin
786e7cdc1d0fd354bb2a994d3b45be7b64e91842ee20bc7f9a6157e713d0b476		 pdf-font-stream PDF embedded font (cff) at offset 0x12A912 146 bytes
font_06_cff_off0012a9f7.bin
dc566301c63842a5757792ba9336925fcfe276ea565fbd5b9600b3332126e5dc		 pdf-font-stream PDF embedded font (cff) at offset 0x12A9F7 5157 bytes
font_07_cff_off0012bada.bin
a3501e130759b3ba73909eae6e0af97031e5d373d4a8a93c1b82dea3d9851425		 pdf-font-stream PDF embedded font (cff) at offset 0x12BADA 1739 bytes
font_08_cff_off0012c23f.bin
3c057c6244a8fcf0961b80e0b7a80d502b648f702ee27382548077c6e7df4e3f		 pdf-font-stream PDF embedded font (cff) at offset 0x12C23F 11304 bytes
font_09_cff_off0012e6bd.bin
a8af6347a230dac0006ca0233f494a295b0e97e3ed793bcacb8ba23cb38b4574		 pdf-font-stream PDF embedded font (cff) at offset 0x12E6BD 2705 bytes
font_11_cff_off00130132.bin
57c71b2d06985da171e19ab6488216e0de7fa2e17ba548fc5dd61f7b3ea63404		 pdf-font-stream PDF embedded font (cff) at offset 0x130132 3851 bytes
font_12_cff_off00130ea8.bin
aeabdd7296e7458619dfe824fce60e81716501eda4fa455cd630690ce30bed2a		 pdf-font-stream PDF embedded font (cff) at offset 0x130EA8 3345 bytes
font_13_cff_off00131985.bin
1d51878934c5bd2b07816a6c8077b40f373f2bbe97d6f802f45e663d8ab0e2d8		 pdf-font-stream PDF embedded font (cff) at offset 0x131985 5150 bytes
font_14_cff_off00132a23.bin
a04986f1fdde2996f1228f8c692d54f0ca73cb78a3d779f31e15b95b375a6001		 pdf-font-stream PDF embedded font (cff) at offset 0x132A23 4950 bytes
font_15_cff_off0013c91a.bin
89a6b2d97af1a2b7960aacec660e183f971d3d859beac54f6ae55819e2672410		 pdf-font-stream PDF embedded font (cff) at offset 0x13C91A 4067 bytes
font_16_cff_off0013d235.bin
1d6653dda9b5ecb635d47f50767b97ba9ebca047a4b68e16e7a24147919fb589		 pdf-font-stream PDF embedded font (cff) at offset 0x13D235 19906 bytes
font_17_cff_off00140d73.bin
434f718c585b22a67dcc915c24f828927af18ffedc22ea7d0eb93e101fc602d8		 pdf-font-stream PDF embedded font (cff) at offset 0x140D73 11541 bytes
font_18_cff_off00142fd3.bin
7b5e181ac903033fc628337c44ddd6e6d1de02eb9762c5a93f0665ac25515bc1		 pdf-font-stream PDF embedded font (cff) at offset 0x142FD3 8651 bytes
font_19_cff_off001464f3.bin
fcb33e06b4ac9ba87b955794e41142d4ec359c3109633f97f4952d320c7a5071		 pdf-font-stream PDF embedded font (cff) at offset 0x1464F3 2131 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.