Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c57fab2ba726bdb…

MALICIOUS

PDF

67.9 KB Created: 2021-03-08 08:00:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 55642548e654e2513b1fc141a0d1c1d1 SHA-1: f123188ff9b4c7ac9b2f0d29827b8bf493b5079e SHA-256: 7c57fab2ba726bdbed65c7cdf585114d2378d0dc95e86bf58ff9cc99fa09d20d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://kuzutuzo.ru/wix?keyword=dell+one+2020+disassembly PDF link annotation
    • http://baramijotafexo.mypressonline.com/food_life_hacks_for_school.pdfIn PDF document text
    • http://bewewafip.scienceontheweb.net/the_night_manager_movie_cast.pdfIn PDF document text
    • https://lotuvimipel.weebly.com/uploads/1/3/0/7/130739731/5ed0d17.pdfIn PDF document text
    • http://zezasarasojid.mywebcommunity.org/is_horse_1978_lucky_in_2020.pdfIn PDF document text
    • https://ziwodenitisal.weebly.com/uploads/1/3/4/3/134350364/tapipilod-zogelu.pdfIn PDF document text
    • https://vataripisak.weebly.com/uploads/1/3/4/6/134600115/9136250.pdfIn PDF document text
    • https://cdn.sqhk.co/sutadejuna/gihifCe/lijujemajipamoxetemetori.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489042/normal_5fdb705acf93c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_600cf70129a1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481400/normal_5fe2d754f1808.pdfIn PDF document text
    • https://xapodopuk.weebly.com/uploads/1/3/1/8/131856257/c7f429b8138f9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447487/normal_6010cdf2ea271.pdfIn PDF document text
    • https://fuwefepitebu.weebly.com/uploads/1/3/4/7/134709748/rolofi.pdfIn PDF document text
    • https://cdn.sqhk.co/pajelidul/b2ivXYc/bixugafomazepuzaroxasa.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/d0409d9d-ce33-4566-847f-587ebe921efb/95378943769.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d107518d-5f25-4c21-a01c-82ff213cf0ac/zugaxonimomeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57cbd2d9-7a9f-4465-817c-40da7f9ce2ab/dd_5e_expanded_weapons_list.pdfIn PDF document text
    • http://furunes.onlinewebshop.net/dagitirivudodi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1d9b5db-e0fc-4efa-b026-dc82ed60320d/ap_calculus_ab_practice_exam_2018_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ca28b63-0acf-427f-8458-80030e5b53a8/steamy_romance_novels_free_read_online.pdfIn PDF document text
    • http://widifusi.myartsonline.com/captain_underpants_the_first_epic_movie_characters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf6ae607-7959-4acc-b496-03bcea963643/twilight_saga_eclipse_full_movie_watch_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2168845d-0558-4ddc-a01b-c1120d5d4b7e/17627719888.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/034cce3a-73cd-4b63-8968-a22c19114033/bash_script_arguments_with_default.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_off0000cf22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF22 5388 bytes
SHA-256: 71cefb2848c21f0f933b2fb063bcf1061e8e91b9119ad72f0ec5bddaa22eceb4
font_01_sfnt_off0000e169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE169 9500 bytes
SHA-256: d58aa2d541703599ffda163e39cffe2ae8326e821b17d5c1dac5a00d665d3c40