Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2f57f048ed17308…

MALICIOUS

PDF

73.0 KB Created: 2021-03-12 00:02:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 90c9a517340fa3cbb565ad441ad613e0 SHA-1: 6fb4c2db139b5da8adbd1ff387929b44b5f1bbf6 SHA-256: a2f57f048ed17308370b7ad2b7571490cee46d6731412f90c12f0ae9364c33e5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bologen.ru/award?keyword=categorias+gramaticales+variables+e+invariables+pdf PDF link annotation
    • http://gasolotiravizid.sportsontheweb.net/unlimited_power_tony_robbins_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448357/normal_6033bbff14f72.pdfIn PDF document text
    • http://fovikoxesaweziz.medianewsonline.com/specialized_cell_structures_worksheet_key.pdfIn PDF document text
    • http://boevoenlp.com/bagofekotutisesojixodokexaqrv.pdfIn PDF document text
    • http://vuvuga.xyz/cheats_for_sims_mobile_on_androidnnxjm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480149/normal_6023ba2e8c105.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484636/normal_600ae63fe3f38.pdfIn PDF document text
    • http://sesalon.xyz/doriruvam6h232.pdfIn PDF document text
    • http://kuboduzuke.mypressonline.com/40413862662.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447101/normal_5fc6c66dd95c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451565/normal_5fc8474d297a2.pdfIn PDF document text
    • http://tryraisins.pro/97889278224nrv3j.pdfIn PDF document text
    • http://duzegotola.medianewsonline.com/vapour_absorption_refrigeration_system_nptel.pdfIn PDF document text
    • http://katipef.medianewsonline.com/tusizufikovo.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/345eea75-d118-4fc6-bd29-99554767fcc4/pelaxejuletenolimatoduvol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bcafa4a-6b8a-4a21-a4f3-a188d005caa5/the_crown_season_2_episode_1_actors.pdfIn PDF document text
    • http://pudedenos.epizy.com/lanexe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e4bdc4e-0f52-41cd-bc61-57429816871c/14055225097.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ec09d1c-55f1-4343-a592-d4d63995b077/39098704968.pdfIn PDF document text
    • http://gogagenuju.rf.gd/arduino_due_datasheet.pdfIn PDF document text
    • http://rixuzomobe.epizy.com/esl_worksheets_for_primary_students.pdfIn PDF document text
    • http://paxovabaresubal.rf.gd/certificates_templates_in_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30ec3aca-25fe-4128-96a5-aa511af6f125/how_much_to_book_life_in_the_uk_test.pdfIn PDF document text
    • http://vukilef.rf.gd/free_address_label_template_5160.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb90f515-f10c-46b5-947e-c27de80126c1/game_of_thrones_cookbook_lemon_cakes.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_off0000e00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00E 5580 bytes
SHA-256: 925c91dbf1f2296bc0bb0af7ef1528027eaec032379865635d92275c5fd6c50a
font_01_sfnt_off0000f2f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F2 10268 bytes
SHA-256: e6ef440a89fb4f1bc5fdc7ddbacccf36405e2b4caa1df855470644be598c16bd

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