Malicious PDF — malware analysis report

Static analysis result for SHA-256 084aa2ec43f81ccf…

MALICIOUS

PDF

73.2 KB Created: 2021-02-24 21:03:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 32e8e75547af49d2520b562a01f18498 SHA-1: c21a0d97384b84d66c0d001810892fc1accf1200 SHA-256: 084aa2ec43f81ccf00df972826953870c9a1d72cd8d7a3a983104db2e2980c8e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://yafferge.ru/award?keyword=winter%2527s+bone+summary In PDF document text
    • http://gisoboxizaza.mygamesonline.org/libros_apocrifos_enoc.pdfIn PDF document text
    • https://cdn.sqhk.co/nufuwijili/Kii63zq/lazanasejatar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369331/normal_602e51236e5fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365621/normal_5fe11851a938d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376125/normal_5ff418da2bd06.pdfIn PDF document text
    • https://cdn.sqhk.co/foxoxaze/hjOpAhb/70404919334.pdfIn PDF document text
    • https://nivujetomut.weebly.com/uploads/1/3/4/7/134753784/sagafevotubazeni.pdfIn PDF document text
    • https://cdn.sqhk.co/sewuvavimebi/d9z00gc/32719606016.pdfIn PDF document text
    • http://lebizifijafaxim.medianewsonline.com/de_que_se_trata_la_obra_cien_aos_de_soledad_resumen.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zitadufafasid.onlinewebshop.net/public_relations_manager_salary_uk.pdfIn PDF document text
    • http://xuxerikafirin.epizy.com/clear_hard_plastic_sheets.pdfIn PDF document text
    • http://zejowupifodoj.rf.gd/58427797638.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_off0000e1a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A2 5088 bytes
SHA-256: 591d74a1727391452860a366f0798a00ccc8412e487648d43d1224ff8446dbea
font_01_sfnt_off0000f2ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EC 10960 bytes
SHA-256: c3a93329dcf84497e497528cd5002dc1fe9ac6c77cab4faa8536b6e8edd17db5