Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d933df36066ba96…

MALICIOUS

PDF

90.8 KB Created: 2021-04-18 22:35:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b2d9335aa3e3e5c18b97d40adcfef880 SHA-1: 89be86decc385fb5117c9507882591b707aca101 SHA-256: 9d933df36066ba96167aba487b6a6bf7fa51c06da05720c1678b0ec03f7657b7
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lozipotod.ru/strik?utm_term=logic+of+english+essentials+placement+test PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380079/normal_5ff95a25cc353.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464534/normal_604049fca916e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529149/normal_5fed420517662.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530171/normal_5ff7cdc13e364.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446166/normal_5fe706bcca4ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491723/normal_5fff3102a4a97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370062/normal_605d0ff3abbfe.pdfIn PDF document text
    • http://fewafef.iblogger.org/dinolawabebe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379974/normal_60062dd2be886.pdfIn PDF document text
    • http://zuwaweno.iblogger.org/budget_proposal_sample.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/62c953e9-1cde-4d2d-ae93-a93e8e0b60ea/12067247737.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a2c18e7-68bb-48a6-843d-2f0eccaadf4c/pedojujipes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbbe4297-cb44-478a-bbcb-66cf35658c7e/realidades_2_capitulo_1b_practice_workbook_1b-6.pdfIn PDF document text
    • http://rovututuxopi.epizy.com/desktop_support_engineer_interview_questions_and_answers_for_fresher.pdfIn PDF document text
    • http://dusilasazeli.rf.gd/corso_italiano_b2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a9f4cab-e8b6-48ef-a085-0ba432c065c3/41322926919.pdfIn PDF document text
    • https://7f06b679-e14d-4525-8955-d56a7cf6f710.filesusr.com/ugd/79e5df_2ee081e159d7405ea19ab614ef7e2b2f.pdf?index=trueIn PDF document text
    • http://natizat.epizy.com/atrocious_crossword_answer.pdfIn PDF document text
    • http://towawemigegi.epizy.com/ejercicios_imperative_ingles.pdfIn PDF document text
    • http://namofigironebej.epizy.com/kovigapev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4915bb08-88cd-4225-bc39-053147102958/funai_zv427fx4_combination_recorder.pdfIn PDF document text
    • http://wawefib.rf.gd/rudoxevopideladosaku.pdfIn PDF document text
    • http://kusikegu.rf.gd/jack_reacher_never_go_back_book.pdfIn PDF document text
    • https://7915398d-c9c2-4241-abdb-40cf742e4b8d.filesusr.com/ugd/d4df0f_e4b8ac1d74ec4b19af10d298e6d52ebb.pdf?index=trueIn PDF document text
    • http://nogomazarem.epizy.com/97844515054.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000110c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110C5 5272 bytes
SHA-256: f95c39a87a839da61752e696681eac6df29e9a703a547ebde31a298b2df15c80
font_01_sfnt_off000122aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122AA 10660 bytes
SHA-256: 90dcf1f9df5a30be4c1c6ebcf699ee6c71f645acca36641694d97204e918040b
font_02_sfnt_off0001473f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1473F 16312 bytes
SHA-256: bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939

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