Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c47d4678e9291a1…

MALICIOUS

PDF

73.6 KB Created: 2021-02-06 13:21:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 30935b3f80f918b0b5e8373a76efe6da SHA-1: cfbdceb234dd6d5f6464b913ef7f5a22212fe4d8 SHA-256: 8c47d4678e9291a16e7f605018da90d56797040e90fe77762aaac3cfd4572edc
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/aws?utm_term=cathleen+ni+houlihan+text+pdf PDF link annotation
    • https://notilapixoto.weebly.com/uploads/1/3/4/3/134397855/9036e78a626e16.pdfIn PDF document text
    • https://wopeduvolevim.weebly.com/uploads/1/3/0/7/130776212/wuvaxowadolibuvosome.pdfIn PDF document text
    • https://zuwuloju.weebly.com/uploads/1/3/2/6/132681456/5a418a9a5e170dd.pdfIn PDF document text
    • https://nibuwoxemunovox.weebly.com/uploads/1/3/4/7/134714338/a97bf.pdfIn PDF document text
    • http://aycotoro2.xyz/traffic_tour_hack_mod_apk_revdlx4ns7.pdfIn PDF document text
    • https://babapijolirex.weebly.com/uploads/1/3/1/4/131409508/1e964f3.pdfIn PDF document text
    • https://dodapufil.weebly.com/uploads/1/3/0/8/130813701/jigezef-delakawunugaf.pdfIn PDF document text
    • http://osmosiotzs.fun/sinuvusisanovisixl7atp.pdfIn PDF document text
    • https://cdn.sqhk.co/gisatajofo/dNhb8ha/tajuwidopakufopozupodemil.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/AQU7ajb/13377377940.pdfIn PDF document text
    • https://kilekawu.weebly.com/uploads/1/3/4/8/134857711/9883512.pdfIn PDF document text
    • http://dayzcommunity.info/best_xbox_360_headphones6rqfw.pdfIn PDF document text
    • https://wisenuru.weebly.com/uploads/1/3/1/8/131856959/moxibofirukudeluz.pdfIn PDF document text
    • https://cdn.sqhk.co/doxowite/ibNfNih/vejejokavoragulasojop.pdfIn PDF document text
    • https://cdn.sqhk.co/mifijizudi/Ogijc7N/hill_climb_racing_2_hack_tool.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/guidepost_montessori_charlotte_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/56678003501.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/motokigiweku.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_off0000e386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE386 4828 bytes
SHA-256: ed7123918e317df9e7e13b7629409188b82e1ead7b420bba66f59dc83928aac4
font_01_sfnt_off0000f3f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F9 11188 bytes
SHA-256: a25c98f4120798c63f5610687f54347c6deb371b6517ccf7e6be96d8e9962249

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