Malicious PDF — malware analysis report

Static analysis result for SHA-256 71e0351857105d3e…

MALICIOUS

PDF

86.9 KB Created: 2021-03-27 19:37:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 543712955731dc0f6f62fa1faf7cc030 SHA-1: 9f167d507744904e88272dd25713f495cb051893 SHA-256: 71e0351857105d3e0cb0b38d0b5bf93f62926d4187bacf9f75a08fa670b023ad
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains an embedded URL pointing to 'mezovuduw.ru', which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains keywords related to search terms, suggesting a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/wix?keyword=wooden+tool+chest+hardware PDF link annotation
    • http://vumajuzatijerak.getenjoyment.net/what_is_the_average_depth_of_a_stackable_washer_and_dryer.pdfIn PDF document text
    • http://sq11mini.com/bose_wave_cd_wont_playcxc8c.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/t_fal_pressure_cooker_walmart_canada.pdfIn PDF document text
    • http://jemulobapamiwu.mywebcommunity.org/zmodo_wireless_camera_manual.pdfIn PDF document text
    • http://jadebey-x.com/crescendo_book_age_ratingj3cvu.pdfIn PDF document text
    • http://sethel.xyz/un_curso_de_milagros_leccion_299pwbaj.pdfIn PDF document text
    • http://sifinujox.sportsontheweb.net/chega_de_saudade_real_book.pdfIn PDF document text
    • http://vostokzapad.su/english-_chinese_glossary_of_legal_termswtq71.pdfIn PDF document text
    • http://zuzorovix.scienceontheweb.net/el_conde_de_montecristo_pelicula_online_latino_hd.pdfIn PDF document text
    • http://nulatapukedu.scienceontheweb.net/100_basic_c_programs.pdfIn PDF document text
    • http://mojadejazisapa.sportsontheweb.net/bankruptcy_act_1869.pdfIn PDF document text
    • http://metarapuw.mypressonline.com/welodesarimexeror.pdfIn PDF document text
    • http://ganoget.scienceontheweb.net/arabic_to_english_words_list.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duvodix.myartsonline.com/the_purpose_of_writing_a_personal_narrative_is.pdfIn PDF document text
    • https://11fe2947-f393-4df3-905d-f9f3730e834a.filesusr.com/ugd/b1b16e_e8b0727c9c3b48e5a0caeccc42751004.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fd52841-0e6b-4d68-b974-13ec0d176fd9/how_to_turn_on_pebble_watch.pdfIn PDF document text
    • http://famekuputoda.myartsonline.com/vunesojofen.pdfIn PDF document text
    • http://vekejuf.atwebpages.com/dixesenoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db5973a3-1495-41bd-bf2f-f3c019383eb4/18001545163.pdfIn PDF document text
    • https://d064ede3-316f-4d13-8ec5-014b2136b3bd.filesusr.com/ugd/154db6_df83c5e0f6e64083900fba16f65d8389.pdf?index=trueIn PDF document text
    • http://gitodake.myartsonline.com/agile_software_development_alistair_cockburn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43d3b8ee-979a-45ad-8496-01f834f50c3f/rozawemagosise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ca3b460-8448-463c-8f4e-b8da589cbfca/how_to_choose_high_resolution_images_on_google.pdfIn PDF document text
    • http://lumosaneja.onlinewebshop.net/fesegoxilolis.pdfIn PDF document text
    • http://nukivamo.myartsonline.com/what_are_the_dates_for_the_sat_in_2020.pdfIn PDF document text
    • https://810dce77-56ab-4324-823a-3549757f4eab.filesusr.com/ugd/1fad07_3cdb15cd7b694048b7aa9d53be9e9abd.pdf?index=trueIn 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_off0001187c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1187C 5132 bytes
SHA-256: 2d35f53de642ab47e5c1895bac585b302e44ce1badd995ffb17fd33c1188f11c
font_01_sfnt_off000129fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129FE 10608 bytes
SHA-256: 78b30ca7351a902d3cc872d0e276eb84b74af9fb4aef832559548385453d895a