Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99c8ec9f1779955…

MALICIOUS

PDF

75.1 KB Created: 2021-02-18 23:45:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f059adbbe217e72513df8932444d6d70 SHA-1: ea4da0edda84fd848104b9d780614099807496f3 SHA-256: f99c8ec9f1779955f2043e53a7de003fdac5af39b903ffe5882e33289e1395d2
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://seumenha.ru/123?utm_term=ethernet+cable+color+code+rj45 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4471235/normal_5ffe4cd0dc7fe.pdfIn PDF document text
    • https://guxilidokuwog.weebly.com/uploads/1/3/0/7/130738661/maligopefezifafopaja.pdfIn PDF document text
    • https://tiwebusimevadeb.weebly.com/uploads/1/3/5/3/135346158/57a153a7.pdfIn PDF document text
    • http://vizilamu.22web.org/wawukubepilused.pdfIn PDF document text
    • https://jodalutuz.weebly.com/uploads/1/3/4/4/134444421/e4274494.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483870/normal_602a21a6bc580.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481820/normal_600e682837191.pdfIn PDF document text
    • http://storeeu.info/suddenly_seventeen_eng_sub39kq9.pdfIn PDF document text
    • https://nisaxiguxizi.weebly.com/uploads/1/3/5/3/135306566/5780415.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392867/normal_5fecd1bfb852c.pdfIn PDF document text
    • https://nuguzawopaji.weebly.com/uploads/1/3/4/0/134040365/joramam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426088/normal_6026c71a1b2c6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jipinasin.epizy.com/patuseneto.pdfIn PDF document text
    • http://gebejofokim.rf.gd/mijifegeviruk.pdfIn PDF document text
    • http://vebodowumiba.epizy.com/ionic_4_angular_7_template.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_off0000e8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8ED 5236 bytes
SHA-256: 9217e82d46b7b32f1610a2fab00801ccc46c477c5580a25fde92df5bce6e21b8
font_01_sfnt_off0000fac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC4 10908 bytes
SHA-256: fa8c443663473c4dbe32b139d38f42812c4d6ae9e925dc332966a0bc48f31c7b