Malicious PDF — malware analysis report

Static analysis result for SHA-256 05603b5485560c97…

MALICIOUS

PDF

66.9 KB Created: 2021-02-27 01:19:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ebf06b464720444fd2ca849c28bd73b4 SHA-1: d6869975e143a89b5692b27e74aa99adee88a91d SHA-256: 05603b5485560c977eb8189eea2f750e33e7e0763e51222907e46608bec60dbc
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/award?keyword=bissell+proheat+essential+pet+manual In PDF document text
    • https://zowobisa.weebly.com/uploads/1/3/5/3/135313501/f62707f4dfa.pdfIn PDF document text
    • http://fidofawi.medianewsonline.com/how_to_connect_bluetooth_to_pioneer_navigation.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408195/normal_60224d94dc76d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495994/normal_602751414d0e2.pdfIn PDF document text
    • http://fragcups.com/93752334483trb8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485005/normal_602a33ec2ff0e.pdfIn PDF document text
    • https://tavifarexup.weebly.com/uploads/1/3/4/6/134611028/bogebenufavi.pdfIn PDF document text
    • http://infokurs.design/wetawakalqgsnq.pdfIn PDF document text
    • http://kakolamilasaru.medianewsonline.com/berigutosedug.pdfIn PDF document text
    • https://zunexoxefa.weebly.com/uploads/1/3/5/3/135340588/karimavo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wutejaxevewef.myartsonline.com/80060492339.pdfIn PDF document text
    • http://namakanexir.atwebpages.com/petroleum_production_systems_2nd_edition.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_off0000ca16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA16 5108 bytes
SHA-256: 3ffbfc9b5cf231f64462601c975b9543bd67fff4d0e43939ae7a5b45c987e385
font_01_sfnt_off0000db44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB44 10444 bytes
SHA-256: 3910bd0baf7b1557fcf288b8ea3d7dacedf0fd1053726f86fe8779775429e7f8