Malicious PDF — malware analysis report

Static analysis result for SHA-256 c943e698ce8895f2…

MALICIOUS

PDF

71.7 KB Created: 2021-03-04 10:58:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 23b68e9858861ac77237a73d5b26ac28 SHA-1: df2edfd47ed7b5642830bd1b82787b639f2f3308 SHA-256: c943e698ce8895f26b97d9ba1a87a352b9e3b797678cc98c4de1cf3f3ecf26c3
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/award?keyword=how+to+check+if+i%2527m+registered+voter+uk In PDF document text
    • https://nawamawivawugu.weebly.com/uploads/1/3/1/3/131398148/1291367.pdfIn PDF document text
    • http://abanca-electronica.com/como_hacer_un_archivo_con_fotos_desde_el_celularb99hh.pdfIn PDF document text
    • http://gta-msk.ru/68437628248rfn7i.pdfIn PDF document text
    • https://pidakulosa.weebly.com/uploads/1/3/4/3/134391257/rumumabaruli_lewabozu_xelixobe.pdfIn PDF document text
    • http://mebets.xyz/magic_bullet_theory_media_examples17d35.pdfIn PDF document text
    • https://cdn.sqhk.co/rorezina/DfUge45/xonuzowotodevup.pdfIn PDF document text
    • http://forkidsshop.online/soulseek_can_t_change_folderpbqkj.pdfIn PDF document text
    • http://viwowiziboso.22web.org/flute_notes_sheet_music.pdfIn PDF document text
    • https://topipanonotege.weebly.com/uploads/1/3/4/6/134679812/tanavifotu-sazen-perutesi.pdfIn PDF document text
    • http://giocodigital.space/independent_t_test_reportjzepe.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/jdjhgie/46550042207.pdfIn PDF document text
    • http://o-karte-kopilka.com/83219856276tvdko.pdfIn PDF document text
    • http://lyudi23.ru/119265127129zfzo.pdfIn PDF document text
    • http://fexanamudavixi.iblogger.org/video_from_website_safari.pdfIn PDF document text
    • http://winclean-shop.space/macos_android_studio_adb_pathlsi5w.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sunoxif.rf.gd/nurilujosudenidofipexano.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/betinget_formatering_excel_rkke.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_off0000dc66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC66 5404 bytes
SHA-256: 44d3736186ea40300972b64af549a508cc274db26d08f2f250e62a7c1907fa20
font_01_sfnt_off0000eec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC5 10320 bytes
SHA-256: 654ced451827d6f5169a17bf07377a4cb15544328aeaa3beeb8a9e011d259eac