Malicious PDF — malware analysis report

Static analysis result for SHA-256 04c3259963969235…

MALICIOUS

PDF

87.7 KB Created: 2020-12-02 20:34:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 4601c8042ddb89abb8881b93b1b53778 SHA-1: 8c234a09bf70a6f45aa16df2e2fc3a62791d6b27 SHA-256: 04c3259963969235ba82c7e5935c0b419cb457fc3401071437e09845d009fade
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL, identified by the PDF_URI heuristic. The ML classifier and ClamAV detection strongly indicate maliciousness, specifically phishing. The document body, though heavily obfuscated, appears to reference search terms related to puppies, likely as a lure to disguise the malicious intent of directing users to the external URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://trafffi.ru/123?utm_term=miniature+schnauzer+puppies+for+sale+near+memphis+tn PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4457318/normal_5fc69db420a93.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0bcfb2e537a05ef083615/t/5fc1ee6e4f98375720252b1a/1606545006517/charlottes_web_characters_book.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf190b474932ca2667d6f/1606218128998/carefree_awning_parts_amazon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffb205e8e827d4288adb3/t/5fc31f5208845d0924f03896/1606623060201/jojekosu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df09b66d-17a2-4b8c-8d94-37b5e07a3169/financial_and_managerial_accounting_2nd_edition_answer_key.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe028de18c5c478ec256d0/1606288016032/tagas.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfd194e98326c02d6451c/1606286617463/vixezigonadotoz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc368199955c744b54b807d/t/5fc678cc7acac6192aa1ed18/1606842572807/4920795954.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc33495affbf90a66f9667f/t/5fc4016ecb3e0f5771cc4d0c/1606680943045/vivotixevibafatudowezeg.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1057b474932ca26a6345/1606226010294/chevy_luv_for_sale_oregon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc100ee92c50b1a1e781c95/t/5fc6e32fefc65c5b7a330f06/1606869820716/the_sims_freeplay_hack_ios_2020_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc00635ff13940aa23ad6dd/t/5fc462791972c46e3c29db14/1606705787906/93488818953.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0132173fb5383b686b7d/1606287666132/the_earth_on_turtles_back_audio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d950fe6d-e1e3-4c99-a53c-6dfa3ba2c514/tatung_rice_cooker_amazon.pdfIn 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/pdf/1.3/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/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11948 5312 bytes
SHA-256: 3a5cbf65003c9636cca399a559462b6f0a5da7f4e0338da567a0b0a506c90aa3
font_01_sfnt_off00012b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B45 11284 bytes
SHA-256: 9bc0bc6f96bc134f35a355c458e1aa540de58391dd57cc9b55e7ac5bf7376678

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