Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b1e5099c8f399e0…

MALICIOUS

PDF

66.3 KB Created: 2021-03-05 22:03:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ae147bff9766e1a535546bdac5385688 SHA-1: 29e2913f68cce22c0208b5eed175b797b72d8dab SHA-256: 4b1e5099c8f399e0c4a8c1ec9b5a583dfbf65e76c98ac309c3499dd30425abdd
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://mezovuduw.ru/wix?keyword=a+nation+divided+guided+reading PDF link annotation
    • http://genusadnlo.space/23273821729hyh47.pdfIn PDF document text
    • http://fortuneo-enligne.com/cheer_haran_movie211rx.pdfIn PDF document text
    • https://mirurilusenut.weebly.com/uploads/1/3/4/6/134631679/pisutazisufodoxugelo.pdfIn PDF document text
    • https://kojaresojew.weebly.com/uploads/1/3/4/3/134312518/pugiwutamesozokiro.pdfIn PDF document text
    • https://mevemedetu.weebly.com/uploads/1/3/1/8/131871578/69b2dc.pdfIn PDF document text
    • https://xuropowupenuba.weebly.com/uploads/1/3/0/8/130813979/7585edee.pdfIn PDF document text
    • http://ledimpress.biz/how_to_put_microsoft_mouse_in_pairing_modea5sgd.pdfIn PDF document text
    • http://byt-upak.ru/midsegments_of_trianglesf58on.pdfIn PDF document text
    • https://walowopus.weebly.com/uploads/1/3/5/2/135295279/baratanokibuvo.pdfIn PDF document text
    • https://fowuwulavo.weebly.com/uploads/1/3/4/7/134754099/sanobosesaze.pdfIn PDF document text
    • http://kersita.space/42485815872cp8qo.pdfIn PDF document text
    • https://welomutulek.weebly.com/uploads/1/3/4/8/134873792/fiwepezosufaz-kafoze-lutijapunenuti.pdfIn PDF document text
    • https://deguverafutaw.weebly.com/uploads/1/3/4/5/134501054/fodamunotebobo.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/lakujusitejojet/bang_bang_remix_nancy_sinatra.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30689f9e-5903-4048-b8ab-7eb723c5577c/28961500269.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/android_activity_label_application_label.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bba6a4d-551d-4972-87b0-89678547cda4/craftsman_17_rear_tine_tiller_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/143795c4-be45-46c4-b1a0-12e943cd78b2/do_walmart_cashiers_get_drug_tested_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79920e7c-805a-4d56-9bf3-d23cddc0b916/samsung_grand_prime_plus_battery_connector_ways.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/76483857370.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83ee32f2-af68-4d34-86fd-f67843ac414d/casio_g_shock_g1000h.pdfIn PDF document text
    • https://s3.amazonaws.com/gatazeromij/ardingly_college_sixth_form_open_day.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/5740086890.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_off0000ca5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA5D 4832 bytes
SHA-256: d38c8a35c4066814d0ad92481563bf80af4619c18d89d9c4567570cfec183c0d
font_01_sfnt_off0000dae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE0 9700 bytes
SHA-256: d36fcb139ab7ff97c1a0fa623066641739a3019b6c73cfed895c6fc4566881af

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