Malicious PDF — malware analysis report

Static analysis result for SHA-256 66dd7a727b077510…

MALICIOUS

PDF

77.4 KB Created: 2021-02-22 07:10:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0de02e6de2ba07984c82f8bc452da948 SHA-1: 41fd7d115ecb85e9451f831a05ec5ae1aa6ebaed SHA-256: 66dd7a727b077510422f6bfffecbe94ee382155d616d720f1c19feee1f35fd57
184 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
  • 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://crophysi.ru/wix?keyword=fire+tv+recast+manual+pdf In PDF document text
    • http://budozezofezuje.iblogger.org/lumurugafovabujoniwevon.pdfIn PDF document text
    • http://clebohets.xyz/catapult_king_mod_apk_rexdljdirt.pdfIn PDF document text
    • http://options.expert/car_simulator_og_dinheiro_infinito_downloadlrucb.pdfIn PDF document text
    • https://zogeliwev.weebly.com/uploads/1/3/4/3/134353139/6655645.pdfIn PDF document text
    • http://unityfree.xyz/56827635509q4l3r.pdfIn PDF document text
    • https://wanojotuza.weebly.com/uploads/1/3/5/3/135346096/9653575.pdfIn PDF document text
    • http://nepifumawal.22web.org/ubuntu_18._04._2_lts_32_bit.pdfIn PDF document text
    • http://jsexj.fun/human_trafficking_definition_international_law65i58.pdfIn PDF document text
    • http://kosadezisadin.22web.org/24975920402.pdfIn PDF document text
    • http://pravagims.net/aromaterapia_el_arte_de_curar_con_aceites_esenciales_gratis0tswp.pdfIn PDF document text
    • https://monivewuvafa.weebly.com/uploads/1/3/4/0/134096064/mubapagepokuluf_lamufut_vujulunawakawux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xapulena.epizy.com/ags_algebra_workbook_answer_key.pdfIn PDF document text
    • http://pisironebininuw.rf.gd/82843407685.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/adobe_scanner_for_pc.pdfIn PDF document text
    • http://zimakufupakafor.rf.gd/rbi_grade_b_application_form_last_date.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_off0000f3ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FF 5316 bytes
SHA-256: 6d0b588e74cbaed4a9be4a2b9619318034450f80e7b15fd8ceb9e541a1f33017
font_01_sfnt_off0001060b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1060B 10208 bytes
SHA-256: 6afd37dac43d6a04f4cbfd0c25daba3d029bddaf2057d57550829f6895d17c20