Malicious PDF — malware analysis report

Static analysis result for SHA-256 57042fb80e45ffc9…

MALICIOUS

PDF

71.7 KB Created: 2021-03-04 02:06:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 25f02bf1a212abdc596d1b2d60665faf SHA-1: c392469cb9abb224a056909ae04aae6b64003b88 SHA-256: 57042fb80e45ffc9d626157e95fd47aa61644125b7e10e69099c1ec6260ef4fb
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://xajibur.ru/award?keyword=what+is+ps+vita+firmware PDF link annotation
    • https://cdn.sqhk.co/xolofiwano/jiifhiJ/hitachi_smart_tv_youtube_problem.pdfIn PDF document text
    • https://nogorixarolixi.weebly.com/uploads/1/3/0/7/130740589/juretegeso.pdfIn PDF document text
    • https://jitolubupiloz.weebly.com/uploads/1/3/4/6/134637312/e5cf92.pdfIn PDF document text
    • http://bitsracing.net/30318392851eq896.pdfIn PDF document text
    • https://sozagigojo.weebly.com/uploads/1/3/1/4/131454883/pigexiweralaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382193/normal_6025b248a960b.pdfIn PDF document text
    • http://pibarulajido.getenjoyment.net/rakaviwogowi.pdfIn PDF document text
    • https://cdn.sqhk.co/sakiforivona/qC6hdja/buzzards_bay_brewery_food_truck.pdfIn PDF document text
    • https://piberarejini.weebly.com/uploads/1/3/5/3/135332679/9611810.pdfIn PDF document text
    • http://justamorem.com/sazaginukebogumiladitamaalvnq.pdfIn PDF document text
    • http://hairsprof.ru/zenepupogujojuboxixakoxu2r6ax.pdfIn PDF document text
    • http://instasale.company/ladiromukatanu8t4am.pdfIn PDF document text
    • https://roloruvibufezer.weebly.com/uploads/1/3/1/4/131410818/tomozoxujigufugefa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dc63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC63 5272 bytes
SHA-256: 49528ef6713da4063a94e37bd3ea0fe221c52b8e1f57cb1901af33ed33e24bfa
font_01_sfnt_off0000ee42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE42 10524 bytes
SHA-256: b960b28ba6ff2e2368350a30ff1cdda8d1061e7424036fecfb99cd88cf07b615