Malicious PDF — malware analysis report

Static analysis result for SHA-256 db17b90d9b7c85ff…

MALICIOUS

PDF

70.7 KB Created: 2021-02-13 18:34:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 254dcf55041b0ea90bc6c0ea9eeb03fc SHA-1: ac099433bfaca226cb85cf7820e6b219f0e49378 SHA-256: db17b90d9b7c85fff916139f3f47b51f6e166a867e605b2abbee236ea7a157ae
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=the+photographer%2527s+eye+pdf+michael+freeman In PDF document text
    • https://cdn.sqhk.co/pemoxeriko/fBhefjh/jisofex.pdfIn PDF document text
    • http://jedugefipevama.iblogger.org/zagonedekir.pdfIn PDF document text
    • http://vasupab.iblogger.org/bdo_cliff_weapon_event_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/difixoruze/aiiidjf/lodobobuxulezakuxemezeje.pdfIn PDF document text
    • https://cdn.sqhk.co/xotolodi/QRjfhbP/63061433819.pdfIn PDF document text
    • https://cdn.sqhk.co/noruwotil/g1Aicpp/94202841599.pdfIn PDF document text
    • https://cdn.sqhk.co/mujejadalale/jhjjsvQ/retroarch_steam_link_n64.pdfIn PDF document text
    • https://cdn.sqhk.co/wixakulu/hu0Vjcq/xadusezesogajuzifewilu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416327/normal_5fcf2779110df.pdfIn PDF document text
    • https://cdn.sqhk.co/woteruzid/hiihb0u/61634269217.pdfIn PDF document text
    • https://cdn.sqhk.co/gebitasixa/uhgidhf/final_fantasy_crystal_chronicles_remastered_switch_price.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzesowasu/cWWTyeY/vr_project_warsaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491159/normal_601450e6322f8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dawifugoxumevej.rf.gd/pigatozuwukerijafekozugu.pdfIn PDF document text
    • http://gozudivigel.epizy.com/junubinetimuxedaxa.pdfIn PDF document text
    • http://fikikozazilut.rf.gd/acceleration_graph_practice_worksheet_answers.pdfIn PDF document text
    • http://zideniniwos.epizy.com/graphical_method_of_adding_vectors_worksheet.pdfIn PDF document text
    • http://vutupaxuvidebif.rf.gd/xawazitanavutugorasujage.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_off0000d72e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD72E 5652 bytes
SHA-256: 2a034f7cf91838dd0b799340eb491afb12aed673349b5658635fbecf2fb726a5
font_01_sfnt_off0000ea54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA54 10268 bytes
SHA-256: 63c2233968190fe11308d3a4adfdcb657e28c9608eb7382d808bfb23b5522299

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