Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e73b9a15bb1a626…

MALICIOUS

PDF

64.6 KB Created: 2021-01-28 13:57:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9b035141dc04649f2f489dbd3262f57e SHA-1: 684c26b61691f7721fda8c1f12c57a97eae1737d SHA-256: 7e73b9a15bb1a6269e689eac1a3f3e9d00ac5da2777fabf86a2c122df8a3cb54
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://seumenha.ru/aws?utm_term=facebook+lite+android+apkpure PDF link annotation
    • https://nozifudofo.weebly.com/uploads/1/3/2/6/132681081/kisokadexosijir-nasuzas-sivotefen.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovipawe/hNC5qQV/forward_assault_mod_apk_2020.pdfIn PDF document text
    • https://filikegepux.weebly.com/uploads/1/3/5/3/135346592/zegemejid_zigemefozelebo_woliviririxemo_mevukuxetafe.pdfIn PDF document text
    • https://cdn.sqhk.co/jogekiluse/jh4jiH3/the_walking_zombie_dead_city_download_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/mojupesonon/idjiQEJ/night_marchers_movie_2019_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/dolavalof/bjhcjco/how_to_use_mannequin_hand_for_nails.pdfIn PDF document text
    • https://cdn.sqhk.co/moxulofilose/jdhiEH2/neon_pink_snake_print_heels.pdfIn PDF document text
    • https://kukegogefip.weebly.com/uploads/1/3/2/6/132681459/ribozovezigixez_didekavubad_rokaloz.pdfIn PDF document text
    • https://zanasebumafuwaj.weebly.com/uploads/1/3/4/8/134899829/miparurop.pdfIn PDF document text
    • https://najigojuvunijo.weebly.com/uploads/1/3/0/8/130874658/c340aa.pdfIn PDF document text
    • https://cdn.sqhk.co/genizataxom/dCrjbia/zemopenisexelabaze.pdfIn PDF document text
    • https://cdn.sqhk.co/dutebevon/idjyngc/goal._com_en_gb_uk.pdfIn PDF document text
    • https://vabemeraronoj.weebly.com/uploads/1/3/1/4/131452983/nigitadux.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/fekazudabo/insurance_affidavit_form_florida.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/39228566746.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/46796257143.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/kuteja.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/pulevavaj.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_off0000c287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC287 5048 bytes
SHA-256: e56b5479d850d25d5009fbf2d29a6ac4e82ab47518ea8e7a78ca52a2b997a7bd
font_01_sfnt_off0000d3be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BE 9856 bytes
SHA-256: c7d50accb29676fa79ae908329f2ed1cbc2165e6da91fc8af9fd469e8ba043ba

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