Malicious PDF — malware analysis report

Static analysis result for SHA-256 db4d12dc9116c5bd…

MALICIOUS

PDF

71.5 KB Created: 2021-03-03 09:55:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 949c236ec3619fbbd3575bd44514911b SHA-1: 3c53f973b8dff955e2f81be9afdbce22bf16785d SHA-256: db4d12dc9116c5bded46ee096b73d4da6c72a636622ad2e71827d132b7b31e19
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/wix?keyword=energy+conversion+in+a+system+gizmo+answer+key PDF link annotation
    • http://sozaxesugoj.mywebcommunity.org/vans_old_skool_suede_blue_fog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383321/normal_5fffb12658d1c.pdfIn PDF document text
    • https://buzixigadojaw.weebly.com/uploads/1/3/5/3/135316262/muvubefa.pdfIn PDF document text
    • http://jedugefipevama.iblogger.org/starcraft_brood_war_battlenet.pdfIn PDF document text
    • http://fanisore.sportsontheweb.net/muvukuxofovi.pdfIn PDF document text
    • https://fozirufimagez.weebly.com/uploads/1/3/0/9/130969558/jofet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495994/normal_601cc8b52fe03.pdfIn PDF document text
    • https://tuxabonelunod.weebly.com/uploads/1/3/1/3/131379680/1212468.pdfIn PDF document text
    • https://zatakigufexip.weebly.com/uploads/1/3/0/7/130738978/7572421.pdfIn PDF document text
    • http://risurevisawibe.iblogger.org/al_quran_para_30.pdfIn PDF document text
    • http://fukuzowi.sportsontheweb.net/new_real_book_volume_2.pdfIn PDF document text
    • https://foroziroxodom.weebly.com/uploads/1/3/4/6/134647192/2415556.pdfIn PDF document text
    • https://gakafapokizi.weebly.com/uploads/1/3/5/3/135319358/texafa-tolawig-gaxapim-rejalizumada.pdfIn PDF document text
    • https://sugokumorol.weebly.com/uploads/1/3/1/4/131437576/2024369.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/kemapimituguriruf.pdfIn PDF document text
    • http://tukazijib.22web.org/bsc_agriculture_application_form_2019_in_tamilnadu.pdfIn PDF document text
    • https://nuvarimo.weebly.com/uploads/1/3/1/3/131378817/341494.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/41026457115.pdfIn PDF document text
    • http://bowegasobufur.myartsonline.com/wuvite.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/for_honor_kensei_guide_2019.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_off0000daf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF2 5412 bytes
SHA-256: 113be48bd56204b10e1130d3d5cc21a6af400fe88488f14c44bbaebc1628e071
font_01_sfnt_off0000ed78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED78 10172 bytes
SHA-256: 0102089203d3533be838540c5facca0ad33a3e2cadbe178f097a3510407c0fcb