Malicious PDF — malware analysis report

Static analysis result for SHA-256 f50718a374f30eaa…

MALICIOUS

PDF

78.2 KB Created: 2021-01-28 19:30:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e3710fd4ee3e7d7ae2a93d9329bebeb5 SHA-1: 67c03e87ea4cfc9571a80bfb228eecbbb59912dd SHA-256: f50718a374f30eaab1e4a0083b39b92f782409ef9611e1e1c8f3b26cdae5bbf2
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://maypoin.ru/wb?keyword=open%20diamond%20mine%20in%20us PDF link annotation
    • http://mp4.design/553312861371iolh.pdfIn PDF document text
    • https://cdn.sqhk.co/zotipimesaza/hiapnjb/healow_eclinicalworks_patient_portal.pdfIn PDF document text
    • https://varepanuror.weebly.com/uploads/1/3/5/3/135394497/jenixu_jugijumalanope_kalepow.pdfIn PDF document text
    • http://wagikopegufiza.66ghz.com/vamexawelizedufogab.pdfIn PDF document text
    • http://callipakk2.site/24399669063dw3hc.pdfIn PDF document text
    • http://xumegexujarev.22web.org/acdsee_pro_8_free_for_mac.pdfIn PDF document text
    • http://peludofnor.fun/case_files_pediatrics1dv95.pdfIn PDF document text
    • https://dugeditukuvil.weebly.com/uploads/1/3/4/7/134723955/8338089.pdfIn PDF document text
    • http://icub.tech/gezugusg3l0y.pdfIn PDF document text
    • http://winoraama.site/55324602044b9c5c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fotopokidag.epizy.com/kusesiluzume.pdfIn PDF document text
    • http://sokevigaku.rf.gd/crystal_report_9._22.pdfIn PDF document text
    • http://ragigixo.epizy.com/vubakem.pdfIn PDF document text
    • http://pepajefosub.epizy.com/detailed_functional_specification_document_template.pdfIn PDF document text
    • http://mimegovo.epizy.com/a_and_s_letter_dp.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_off0000f496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF496 5004 bytes
SHA-256: b65a00482b3207ebbdbdd3aa7cb81a985baa719f987322f0017dc1a8aa1001af
font_01_sfnt_off00010587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10587 11540 bytes
SHA-256: a80b8adb9c33c03a77dcfba35695230a381feeb1d6e923f756718d473616002c