Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eef6de9f15058e0…

MALICIOUS

PDF

92.2 KB Created: 2021-03-20 14:33:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: ea74b797ee6d207157b24b8c94fda801 SHA-1: 3548c8cf72abb5b05319ca17f03e40d1b30a7bc9 SHA-256: 0eef6de9f15058e0fe4b196f72d4dc51fdb103d49b984fb620bf86a0aae5cebb
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://mezovuduw.ru/wix?keyword=brian+bell+weezer+island+in+the+sun PDF link annotation
    • http://zefujixa.mywebcommunity.org/fixibodopimesofarib.pdfIn PDF document text
    • http://ig-mediateam.net/jowesalomibutuwojatobikog7nstx.pdfIn PDF document text
    • http://hs-life.ru/58412801744nrb5u.pdfIn PDF document text
    • http://xofofumireke.mypressonline.com/bihar_board_dummy_admit_card_2020_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_60250b7acf33a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382782/normal_5ff13ded7952f.pdfIn PDF document text
    • http://fidafevemikiwe.mywebcommunity.org/27644824908.pdfIn PDF document text
    • http://wersita.space/74226582191mkea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408984/normal_5fdbe6f8468e3.pdfIn PDF document text
    • https://zakutawevuvukug.weebly.com/uploads/1/3/5/9/135970657/mukefipexijeri.pdfIn PDF document text
    • https://nurufumetexode.weebly.com/uploads/1/3/5/3/135323779/c937d93f14b195.pdfIn PDF document text
    • https://wujabadatudipox.weebly.com/uploads/1/3/5/4/135400083/2664120.pdfIn PDF document text
    • https://xavabakonoliwif.weebly.com/uploads/1/3/4/4/134477423/2642636.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470980/normal_6045854fdbb98.pdfIn PDF document text
    • http://gelchlen.fun/11275122222o5o1p.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413846/normal_5ff56a4ef0c0c.pdfIn PDF document text
    • https://mowavowami.weebly.com/uploads/1/3/4/5/134591552/dawidugokulasow.pdfIn PDF document text
    • http://otomail.business/colouring_worksheet_for_pre_kgdoya8.pdfIn PDF document text
    • http://rexevivejegox.scienceontheweb.net/25594720584.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/389d49be-610a-43a6-a4cc-49cc6cf0c711/puliwog.pdfIn PDF document text
    • http://mugazukadum.onlinewebshop.net/what_penny_stocks_are_on_robinhood.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a661bb2-19d8-4c42-9036-97b408efb321/if_pangea_still_existed_where_is_philippines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f643b6c3-9534-4593-8c56-8d0200b02706/6857806872.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09b19a29-af80-43c3-8845-2159548c0731/62031966638.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed908879-dc67-4bc9-8a8c-56f7fae4dfe1/baby_bird_screaming_meme_twitter.pdfIn PDF document text
    • http://mifotabelimudon.myartsonline.com/daweseduwekurufut.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_off00012901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12901 5244 bytes
SHA-256: d63f17c7816f3490883bb99fa636d30ec71ea5d01538055bf13ad02ff6e3512e
font_01_sfnt_off00013ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AE0 12068 bytes
SHA-256: 36a143d4a4ec4b7b3c2a6843211af702b27bf3f7e7f249ed5e46b0bf8aa127fb