Malicious PDF — malware analysis report

Static analysis result for SHA-256 36987bb396661b40…

MALICIOUS

PDF

68.5 KB Created: 2021-03-04 08:49:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a57f6d6b135e54b3bf2509f73c75d5c9 SHA-1: 79ea1075ba41cf5e8cdf3db72ac924cd53497c38 SHA-256: 36987bb396661b402ee7772d1a133256ec2defb2faa6669488f9b8d6de3960a6
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/wix?keyword=ap+us+history+test+chapter+1-4+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447640/normal_60340d423fcd8.pdfIn PDF document text
    • http://vuwimoxit.mygamesonline.org/1633693671.pdfIn PDF document text
    • http://momarivido.mypressonline.com/what_ink_does_hp_8620_use.pdfIn PDF document text
    • http://rijewomel.scienceontheweb.net/wuziseresoletuf.pdfIn PDF document text
    • http://gijofabenetawix.66ghz.com/xokuvezugimi.pdfIn PDF document text
    • http://zanovekolasin.mywebcommunity.org/dakodelifujajolokugi.pdfIn PDF document text
    • http://newipufisatag.scienceontheweb.net/daxiwogijetemuvetub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477164/normal_601f13e085cdf.pdfIn PDF document text
    • http://fosipuzo.mypressonline.com/bajar_musica_gratis_mp3xd_para_celular.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502336/normal_5ff1b13e8c0a0.pdfIn PDF document text
    • http://fusojosejivo.iblogger.org/bhojpuri_video_mp4_hd_2018.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/saduridibawajofo.pdfIn PDF document text
    • http://xenalebosob.scienceontheweb.net/dd_4e_players_handbook_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455642/normal_600a1151b4e42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365649/normal_5fcd500109db6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kewetanetoza.atwebpages.com/how_to_thread_old_singer_machine.pdfIn PDF document text
    • http://rofeluw.epizy.com/femisugumegewitofa.pdfIn PDF document text
    • http://degavitorepapi.rf.gd/ryobi_bt3000_owners_manual.pdfIn PDF document text
    • http://witesenigo.atwebpages.com/how_to_write_a_story_grade_2.pdfIn PDF document text
    • http://jiruroxi.epizy.com/black_and_decker_rice_cooker_plus_manual.pdfIn PDF document text
    • http://vuroxazejugu.epizy.com/que_tipo_de_te_puedo_tomar_en_el_embarazo.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_off0000cc3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC3D 5344 bytes
SHA-256: 4165462cf2d83fe306fc775af5a6c9cf5beb3088e6b97eef7ff6215e5f863c0f
font_01_sfnt_off0000de8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE8E 10656 bytes
SHA-256: 1fe1e08c47705a11188463245937a11b2767647b1e2d7734f5724ebd9d6108d3