Malicious PDF — malware analysis report

Static analysis result for SHA-256 57020f17b1c0981e…

MALICIOUS

PDF

67.3 KB Created: 2021-02-26 10:19:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5821c65537e2981a75dc787d1bad8511 SHA-1: dc5751841cfa7d0fccd5acb654ea95cd982002f5 SHA-256: 57020f17b1c0981ef75863272c4831fbb970879cf02a3afa2a569e638f52d92c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/award?keyword=does+light+relief+work+for+arthritis PDF link annotation
    • https://cdn.sqhk.co/jebumujo/Jdjisii/cloudflare_status_api.pdfIn PDF document text
    • https://nijodumedogale.weebly.com/uploads/1/3/6/0/136082157/vebovu-dibafa.pdfIn PDF document text
    • https://cdn.sqhk.co/konumapedowe/ic1oibj/afreecatv_valorant_showdown.pdfIn PDF document text
    • https://gedofulijul.weebly.com/uploads/1/3/0/7/130775434/35b26c9debe0e.pdfIn PDF document text
    • https://wavasifowimuzog.weebly.com/uploads/1/3/5/3/135321241/7875809.pdfIn PDF document text
    • https://cdn.sqhk.co/dunafafaxen/ie4ibhe/soccer_star_2019_top_leagues_hile_apk.pdfIn PDF document text
    • https://tukobigerokigab.weebly.com/uploads/1/3/4/6/134653943/3650294.pdfIn PDF document text
    • https://kusikulovaledif.weebly.com/uploads/1/3/1/6/131606813/pulinipafuwukew-porupuse-zovuviraxesof-larikab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379987/normal_601dd79fb8e73.pdfIn PDF document text
    • https://cdn.sqhk.co/lagidexetin/b8ggjcr/543_isle_of_pines_road_mooresville_nc.pdfIn PDF document text
    • http://worameruvejaka.mywebcommunity.org/how_do_i_become_a_medical_assistant_teacher.pdfIn PDF document text
    • https://cdn.sqhk.co/saseponirifa/fNLigib/84509096875.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xavisijividefo.epizy.com/telefono_informacion_ayuntamiento_de_malaga.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/xokelowajebuw.pdfIn PDF document text
    • http://gixisenusadat.rf.gd/regular_vs_irregular_verbs_worksheet.pdfIn PDF document text
    • http://vopapatadape.epizy.com/757550857.pdfIn PDF document text
    • http://jamosafiseb.rf.gd/autocad_2007_free_for_mobile.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_off0000cb5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB5C 5184 bytes
SHA-256: 11eb56583033fd7c44d04e4f4eebb40de4bb8ed29e7d969bb5bef6849f86a372
font_01_sfnt_off0000dd0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0E 10252 bytes
SHA-256: 52a5d4e67271ed24549c2f62358c029134b98508339183f12dcb71e9f68c374a

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