Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e2712dd7a7e932…

MALICIOUS

PDF

78.0 KB Created: 2021-05-03 07:42:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 769dc42fd26b92a66ee6b5c1e60131d8 SHA-1: 5175b4371c012f771c27661c68406fc1412337d6 SHA-256: 29e2712dd7a7e932cf595e6da05a950c7a207ce45dc1e83bbab9e73f606aac42
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier assigned a high probability of maliciousness. It contains an embedded URL pointing to 'soxebez.ru', which is likely used to deliver a malicious payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to a 'Macbeth graphic novel online'.

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://soxebez.ru/strik?utm_term=macbeth+graphic+novel+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465924/normal_5fe8cda6c7855.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466146/normal_605532f181a31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369343/normal_6062be0386302.pdfIn PDF document text
    • http://zanodopowe.sportsontheweb.net/32469551713.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472491/normal_5fcd6ccd15a35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418987/normal_5fd5fa3a5de59.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/517a7e68-e9a8-4d13-a446-095eaaeaaeac/digno_eres_de_gloria_acordes_en_teclado.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/organic_chemistry_nomenclature_practice_problems_with_answers.pdfIn PDF document text
    • http://wepikupovug.myartsonline.com/boost_your_vocabulary_1.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/85308939516.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/66157090581.pdfIn PDF document text
    • http://tipatanakuke.onlinewebshop.net/38175812806.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/appstorevn_ios_5._1._1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc8320cd-4c97-473c-bc6e-aa9cc9d695cf/bible_quotes_app_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/789f3ec0-b675-4088-85be-7514890cde70/how_to_update_garmin_astro_430.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/best_thrawn_book.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_off0000f433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF433 5220 bytes
SHA-256: 1db9c3c4fbe2927b9091a220c9a1b68aba94323a4b75a2f917ee863f3e51a829
font_01_sfnt_off00010605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10605 10776 bytes
SHA-256: 8b65736f1a83d77038c239c877e2a9e4d9718959c09171953080dd2b560f3d5f

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