Malicious PDF — malware analysis report

Static analysis result for SHA-256 266381b5d7e4679e…

MALICIOUS

PDF

66.8 KB Created: 2021-02-22 08:38:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6b6402f4400e9e996f60c8e0d3f0cd9b SHA-1: e29496ebcd0318d97e80c15e4935e42067cd64bd SHA-256: 266381b5d7e4679e3d718914d671f02daedb510277cb4697c919b061de494551
244 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
  • 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 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.
  • 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=diskdigger+pro+apk+free+download+apkpure In PDF document text
    • https://vejarava.weebly.com/uploads/1/3/1/0/131070596/nepabomaroki_tuduxamezojig_bojepubabigusa.pdfIn PDF document text
    • https://cdn.sqhk.co/liralimujote/WPhjUMb/my_talking_pretty_girl_download.pdfIn PDF document text
    • https://gavevuroboba.weebly.com/uploads/1/3/5/9/135959422/topemabunuvuwav_fadixazum_muvijapevo.pdfIn PDF document text
    • https://bawimadesudife.weebly.com/uploads/1/3/4/3/134363746/kixijusuxawa.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/8827258.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411489/normal_5fea1860a87da.pdfIn PDF document text
    • https://cdn.sqhk.co/wexufenu/hhgigjh/vubetop.pdfIn PDF document text
    • https://wifamiwipefap.weebly.com/uploads/1/3/0/7/130738562/daziparaperumut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475995/normal_60199b69231fc.pdfIn PDF document text
    • https://fejurisikem.weebly.com/uploads/1/3/0/7/130740008/rovadinadetu.pdfIn PDF document text
    • https://sujanumijixedi.weebly.com/uploads/1/3/4/5/134501714/2967072.pdfIn PDF document text
    • https://panusefebile.weebly.com/uploads/1/3/5/3/135331690/perisa_zabolikimoxer_zironomurijarem_xidadutikizuf.pdfIn PDF document text
    • https://cdn.sqhk.co/pakevetuzi/ejbjegj/football_referee_costume_mens.pdfIn PDF document text
    • https://reponobokuwe.weebly.com/uploads/1/3/5/4/135401207/4714662.pdfIn PDF document text
    • https://basedupapopulow.weebly.com/uploads/1/3/4/3/134344364/8856024.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vosafaw.rf.gd/walter_scott_books.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_off0000c47d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC47D 5364 bytes
SHA-256: b7bfc1a366c2e968aee03b25b0a50504da71dbfe28a85f2dda9a2e616958759d
font_01_sfnt_off0000d6ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6EA 12576 bytes
SHA-256: f5ddab776aab0cfc80987375c72b772b830528c7799abdf68af14b49c17b149e

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