Malicious PDF — malware analysis report

Static analysis result for SHA-256 836f933fc0c35bd2…

MALICIOUS

PDF

70.6 KB Created: 2021-02-13 19:38:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9d1ffa4750866da52c167bfe1d757169 SHA-1: 171b4cc4fa5c24c97dc567283c2e7b55ad00de2a SHA-256: 836f933fc0c35bd226aef590974fd8dc21797954c7641bc4b5458cef759c3e19
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://jottigo.ru/wix?keyword=knights+and+dragons+hack+apk+file PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369657/normal_6008913c111df.pdfIn PDF document text
    • http://bogaxusamukuxid.22web.org/oem_tire_size_guide.pdfIn PDF document text
    • http://albl.ru/auto_call_recorder_apps_for_androidy5kru.pdfIn PDF document text
    • https://bomaripuxizidul.weebly.com/uploads/1/3/4/9/134901287/julodanikug.pdfIn PDF document text
    • http://wide-do.top/all_photos_from_messenger_chata4ctc.pdfIn PDF document text
    • http://pajodumu.22web.org/wiliv.pdfIn PDF document text
    • http://thailandlove.site/badabawifidumirumuporasnfgt0.pdfIn PDF document text
    • https://pukaxonimuno.weebly.com/uploads/1/3/4/4/134435323/cd165.pdfIn PDF document text
    • http://supernefritroller.xyz/ascus_hpv_negative_guidelinessqave.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420034/normal_5ffcffdd5321c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377717/normal_60148750dcd07.pdfIn PDF document text
    • https://fetezubusob.weebly.com/uploads/1/3/2/6/132681625/kepisadanow_rizebi_geraveraw_wijukuvisunul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495402/normal_5ff833bf675a9.pdfIn PDF document text
    • https://fosaxobe.weebly.com/uploads/1/3/4/8/134882536/zosikexovom.pdfIn PDF document text
    • https://vemisalisak.weebly.com/uploads/1/3/1/4/131437925/72cfd327.pdfIn PDF document text
    • http://world-wildshop.com/344426065163fpxh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bedawisanono.epizy.com/nisivosa.pdfIn PDF document text
    • http://pepajefosub.epizy.com/indigo_airlines_basic_information.pdfIn PDF document text
    • http://tanukino.epizy.com/single_bed_fitted_sheet_measurements.pdfIn PDF document text
    • http://ribebipewafiwas.epizy.com/bahubali_1_full_movie_telugu.pdfIn PDF document text
    • http://zizakipu.epizy.com/whatsapp_apk_plus.pdfIn PDF document text
    • http://muvipifipu.rf.gd/56480446350.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_off0000d780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD780 5448 bytes
SHA-256: b00cd7cf85e72495425764e41c92f7dfeedbbeff98c5243bfdbea3447a8dc67a
font_01_sfnt_off0000ea0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA0C 10180 bytes
SHA-256: 632a4831a872ae992a6dcc45efa6fa3dd51545e075ea744b4b3a35893879090a

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