Malicious PDF — malware analysis report

Static analysis result for SHA-256 51d310c11ddedd49…

MALICIOUS

PDF

70.1 KB Created: 2021-03-01 20:43:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 983c237a03b6551a066d085d6e4d9bda SHA-1: 70bc766658ddd3907a82cc09969b7a7692c9ec5b SHA-256: 51d310c11ddedd4982a1cee69a3224e3d43885147c77579f7631397be00bda9a
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://maypoin.ru/wix?keyword=luther+starts+the+reformation+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/tinodifozeza/0j6heKp/90961298415.pdfIn PDF document text
    • http://gowanenutik.mypressonline.com/graphic_design_software_free_download_for_windows.pdfIn PDF document text
    • http://lazategomid.scienceontheweb.net/how_to_check_epson_ink_level.pdfIn PDF document text
    • https://cdn.sqhk.co/duzixulok/eiihlOn/juxadizawogajekipowijaja.pdfIn PDF document text
    • http://mkr-olimp.info/rccg_sunday_school_manual_24th_january_20216mfo0.pdfIn PDF document text
    • https://cdn.sqhk.co/ferorigife/6ngiG63/14615826747.pdfIn PDF document text
    • https://cdn.sqhk.co/nawakema/HiiSsMh/vanadofoxazide.pdfIn PDF document text
    • http://pagavopalubutu.scienceontheweb.net/rinnai_gas_tankless_water_heater_reviews.pdfIn PDF document text
    • http://xilatotes.sportsontheweb.net/myles_munroe_teaching_on_prayer_and_fasting.pdfIn PDF document text
    • https://cdn.sqhk.co/mepapogivoma/Oie7cjf/58498586676.pdfIn PDF document text
    • http://mikovil.mywebcommunity.org/asus_m2a-vm_audio_driver_windows_10.pdfIn PDF document text
    • http://terakusinuw.mypressonline.com/bible_chronology_timeline.pdfIn PDF document text
    • http://roxelejabojafe.scienceontheweb.net/garuvevewudemugasizovub.pdfIn PDF document text
    • http://tejidirexe.mywebcommunity.org/mifolebenujojemiz.pdfIn PDF document text
    • http://lukufogud.getenjoyment.net/what_is_the_generic_structure_of_procedure_text_brainly.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kosezofejesuxef.atwebpages.com/jeep_auto_body_shops_near_me.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/cuantos_metros_cuadrados_en_un_acre.pdfIn PDF document text
    • http://kakasis.onlinewebshop.net/electrolux_vacuum_repair_shop_near_me.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_off0000d758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD758 5072 bytes
SHA-256: dd97cda712e2814fd920d53e8b5fcd6fa60579056e08fc9d1ebe75a221430362
font_01_sfnt_off0000e887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE887 10104 bytes
SHA-256: 3511d74385d75ea7ecad04c75d8f713ce0320fe6707e66f524e0c1bc5609e798