Malicious PDF — malware analysis report

Static analysis result for SHA-256 efb717f5a772d5cb…

MALICIOUS

PDF

63.6 KB Created: 2021-02-27 16:31:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e28887fcf1adf0e843f3563951ab63fb SHA-1: c2d626043f0199ee614ee9b3184956b964e1473d SHA-256: efb717f5a772d5cb8723ff104ebf4abfcee8e4509e6381e1c966d64004f95a5c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/strik?utm_term=aqualink+rs6+owner%2527s+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4372354/normal_5fe5750d5abb5.pdfIn PDF document text
    • https://cdn.sqhk.co/pesamelez/ahcyl9P/kung_fu_fighting_movie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426424/normal_6023626700de3.pdfIn PDF document text
    • https://cdn.sqhk.co/karadirimose/jpATEMU/okcupid_promo_code_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/kovajivika/bhfMifS/create_a_list_in_excel_cell.pdfIn PDF document text
    • http://xonitaj.mywebcommunity.org/piwosedi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459478/normal_60241cf74c2ad.pdfIn PDF document text
    • http://dinetaki.22web.org/chromedriver._exe_2._42.pdfIn PDF document text
    • http://rowexusaje.mypressonline.com/fubegobasadejejugosokoda.pdfIn PDF document text
    • http://xogubafirugufa.iblogger.org/39706143623.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479715/normal_6037add327879.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://piterar.epizy.com/puxozozalugasukonek.pdfIn PDF document text
    • http://megigezorozo.atwebpages.com/what_year_is_the_kindle_fire_hd_3rd_generation.pdfIn PDF document text
    • http://kalotiwinilobiw.epizy.com/pdf_editor_free_online_rotate.pdfIn PDF document text
    • http://xilibosukotijob.epizy.com/the_end_of_evangelion_song.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_off0000bdcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDCD 5292 bytes
SHA-256: f901621016b32fcfbf34fea12c4cc25356c0ca724ff3a26e34d86b87b1eea3c5
font_01_sfnt_off0000cfd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD3 9876 bytes
SHA-256: 7364dad2b461bbb477b705ed11f9bee5b9a37ddb179177980e0b232c35d05684