Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c9128764064cff1…

MALICIOUS

PDF

73.9 KB Created: 2021-02-02 20:53:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 49fff073f3ede9a5eb8f1cdac66f7d56 SHA-1: e223589c2772ec9703885782cd25d273d0729134 SHA-256: 7c9128764064cff19b1a8bc115a360f77a6156a2efb595eded00ab72339708f9
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://maypoin.ru/aws?utm_term=atc-+guide+belay%252F+rappel+device PDF link annotation
    • https://medefali.weebly.com/uploads/1/3/4/0/134012737/nowijixejoge.pdfIn PDF document text
    • https://bativizamazon.weebly.com/uploads/1/3/4/7/134770744/kunosuwuzeju_nabidajetag.pdfIn PDF document text
    • http://dovulup.iblogger.org/4511544801.pdfIn PDF document text
    • http://zobebukore.22web.org/83044735173.pdfIn PDF document text
    • https://bujakisuka.weebly.com/uploads/1/3/2/6/132695398/rosefusake-visutijigevaves-risasunagedudas.pdfIn PDF document text
    • https://kowalarezanir.weebly.com/uploads/1/3/1/4/131438161/kasebewivaji.pdfIn PDF document text
    • http://jotijitod.66ghz.com/espghan_espen_guidelines_paediatric_parenteral_nutrition_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/tazifawixax/1jggdjg/republique_bananiere_definition_facile.pdfIn PDF document text
    • https://cdn.sqhk.co/vimewiki/uVZAjcD/wrecking_ball_lyrics_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/1CHPHqQ/lozoxasidogazis.pdfIn PDF document text
    • https://gulekikafosevog.weebly.com/uploads/1/3/2/3/132303175/7af509.pdfIn PDF document text
    • https://cdn.sqhk.co/zaweniwefi/jdhafhi/25929102109.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nekipusixewid.epizy.com/34262236074.pdfIn PDF document text
    • http://fotiworoz.epizy.com/47103740910.pdfIn PDF document text
    • http://fefiraxubuviwep.epizy.com/tizobosupofofa.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_off0000e550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE550 5424 bytes
SHA-256: b5ef68e9a5fab71a0de37ee753c8c7e797c6cd4993924f07a1551b21ebef10ce
font_01_sfnt_off0000f7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E9 10172 bytes
SHA-256: acc8e3a52a55704388b84f144b3a7e234f2bad528b7e0c8594078d5386d18d17