Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7a2382e2b1e4b91…

MALICIOUS

PDF

71.4 KB Created: 2021-02-17 04:28:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f899faac288ec8bf24cbc1ece7b8dcbe SHA-1: 9d10aba98411333d4c20574e5715481cf09c6dea SHA-256: c7a2382e2b1e4b911f547390128de6df0153e3ec9c0aa4fc678e8e0f4de85516
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://bologen.ru/wix?keyword=amazon+gift+card+code+generator PDF link annotation
    • https://cdn.sqhk.co/nifodotiriru/dxKUsZ9/20840725243.pdfIn PDF document text
    • http://duxolaw.22web.org/answering_interview_questions_examples.pdfIn PDF document text
    • https://bonadamoge.weebly.com/uploads/1/3/4/0/134000068/8205182.pdfIn PDF document text
    • https://cdn.sqhk.co/jotapepikota/gHMuD5l/60939523048.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/gqn20LF/votisoki.pdfIn PDF document text
    • https://cdn.sqhk.co/jugemito/Libo2kU/legend_of_sword_2_chinese_drama.pdfIn PDF document text
    • https://dalideno.weebly.com/uploads/1/3/5/3/135384103/kolajewof.pdfIn PDF document text
    • https://zedasadexim.weebly.com/uploads/1/3/0/7/130775923/362030.pdfIn PDF document text
    • http://fusubakitakudup.66ghz.com/texas_car_title_transfer_application_form.pdfIn PDF document text
    • https://cdn.sqhk.co/rexukewanej/gihgfjd/87059835163.pdfIn PDF document text
    • https://cdn.sqhk.co/nowavutu/yo7x0jj/blockman_go_beta_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/nilesatu/1jgibib/61219235658.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/ropidadegaxut/ligimezu.pdfIn PDF document text
    • http://zifasodokid.epizy.com/57184005670.pdfIn PDF document text
    • http://sovupafol.epizy.com/9132938813.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/puwuxipudusu.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_off0000dab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB2 5172 bytes
SHA-256: d2953a09f44446784ade424d85a2eef3ac32c6dc3896e766b6963b9887a68b60
font_01_sfnt_off0000ec3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3C 10876 bytes
SHA-256: 9bff7045437f030366bf7f3e2f57a721bad4405cf79837f1f3fd7138914b28ac