Malicious PDF — malware analysis report

Static analysis result for SHA-256 671a814a9ffa0b3a…

MALICIOUS

PDF

71.9 KB Created: 2021-02-14 01:31:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 041a6ac02fccf81709fd4bc4bab5a3d2 SHA-1: b0de031d9de32304a091f559202e24a4c6c2c511 SHA-256: 671a814a9ffa0b3a01d34551c7a3d0074a3e07a3ff6552e24fc3d3469282357c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/aws?utm_term=is+a+sweater+dress+semi+formal PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409413/normal_5ffdf5cfe07e9.pdfIn PDF document text
    • http://pawusofadezozep.22web.org/kejamagemotexumeleri.pdfIn PDF document text
    • https://nafesidupige.weebly.com/uploads/1/3/2/6/132680955/sizanunil.pdfIn PDF document text
    • http://nikaold.site/skyrim_destruction_magic_leveling_guidec44a6.pdfIn PDF document text
    • https://fuzimisadu.weebly.com/uploads/1/3/5/3/135319831/mefemokijixumen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376099/normal_5ff556727fee1.pdfIn PDF document text
    • http://hairsprof.ru/zexulizofulavejeb2v44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446784/normal_601f604b1934e.pdfIn PDF document text
    • http://yyyyyyhhhhh.space/pancake_recipe_with_cake_wheat_flourewikc.pdfIn PDF document text
    • http://reactivaperu-2020.com/descriptive_statistics_by_variable_spssh9g9b.pdfIn PDF document text
    • https://numilobes.weebly.com/uploads/1/3/4/2/134235742/cb9fa2b81ef3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391327/normal_5fc611470d187.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wafibajew.epizy.com/free_printable_2020_calendar_templates_with_holidays.pdfIn PDF document text
    • https://s3.amazonaws.com/lopeteb/cadillacs_and_dinosaurs_3_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/bikimujoxim.pdfIn PDF document text
    • http://wemubivoparuf.epizy.com/37999400105.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/sufigipo.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/adv_informatica_cif.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_off0000dd6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6B 5084 bytes
SHA-256: dda095d1a9c64ba50d48eebdd90f24ab330ac61943a73a0697aa548b36258d55
font_01_sfnt_off0000eeb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB3 10464 bytes
SHA-256: 18dd97b4656d764ffa188da825310f18550c44c7b52b4c5a1a51bd5d0f6beb2b