Malicious PDF — malware analysis report

Static analysis result for SHA-256 957d639ef46aef0f…

MALICIOUS

PDF

71.0 KB Created: 2021-02-14 12:29:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7f7b70a4890e682e0e46af87499327c3 SHA-1: 2afc0384c903982e53b27843b7c3d8b5209d6a22 SHA-256: 957d639ef46aef0f40c3c0b658661a978de6e32cf80c9faa0c897d1cd64440af
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/wix?keyword=over+saturated+market+meaning PDF link annotation
    • https://xufefizomuziz.weebly.com/uploads/1/3/5/3/135346589/pizetinawe.pdfIn PDF document text
    • http://musofiron.ru/biographical_information_about_frances_hodgson_burnettbuezn.pdfIn PDF document text
    • https://cdn.sqhk.co/nudizodi/YQxNVVN/miwoxarukutulem.pdfIn PDF document text
    • https://cdn.sqhk.co/kujusiru/mqihGnI/royal_caribbean_cruise_ships_number_of_passengers.pdfIn PDF document text
    • https://cdn.sqhk.co/nugofonavuf/ECihihA/pregnancy_baby_growth_chart_week_by_week.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/gjhashb/39990955599.pdfIn PDF document text
    • https://cdn.sqhk.co/vugujebeku/hiibthh/bet365_customer_service_number_australia.pdfIn PDF document text
    • http://verifybadgesbusiness.com/restricted_stock_units_tax_reportingtyhhk.pdfIn PDF document text
    • https://cdn.sqhk.co/woleparos/jpigKhd/bufibagolasemip.pdfIn PDF document text
    • https://kaxorude.weebly.com/uploads/1/3/4/0/134095875/9853652.pdfIn PDF document text
    • https://rubexanow.weebly.com/uploads/1/3/5/3/135346757/4496474.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389361/normal_602285a5cee8f.pdfIn PDF document text
    • https://cdn.sqhk.co/fabukujeb/gjYheha/4_pics_1_word_6_letters_sleeping_cat.pdfIn PDF document text
    • https://cdn.sqhk.co/kobadaxo/6idhegh/59577155582.pdfIn PDF document text
    • https://gixoloxivut.weebly.com/uploads/1/3/4/0/134040336/7842172.pdfIn PDF document text
    • https://burakatotofok.weebly.com/uploads/1/3/1/8/131871829/12b6e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD931 5264 bytes
SHA-256: 8fd7ddc9e07e5bd2d6c2c10448508f7c20720fda7e098527d63f91b256b7cc83
font_01_sfnt_off0000eb0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0E 10744 bytes
SHA-256: 9300635431c177b535a47d52870c84890d7024123b1e1949025f560bff96e9e1

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