Malicious PDF — malware analysis report

Static analysis result for SHA-256 c846de307a865572…

MALICIOUS

PDF

78.5 KB Created: 2021-02-13 22:42:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 403ab6cec1d63ae61b8fdae6b8832589 SHA-1: f929f6d01c32f2341e2a559c2e0309cfa473288f SHA-256: c846de307a86557228b05e145e5bb4973f58d2ffd7005effebc68d190377df9e
186 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
  • 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://seumenha.ru/wix?keyword=lexmark+t630+parts+manual PDF link annotation
    • http://gujufifirisin.22web.org/bond_lodgement_form_online.pdfIn PDF document text
    • https://sevakozo.weebly.com/uploads/1/3/4/6/134677934/kisulefajajoxufe.pdfIn PDF document text
    • https://lijokojojet.weebly.com/uploads/1/3/5/3/135333606/pugonudolawu.pdfIn PDF document text
    • https://fejoburu.weebly.com/uploads/1/3/0/8/130813906/seberoxemuku-rubitugexe-saxotowogu-rivoxuwala.pdfIn PDF document text
    • https://nikamajavefuxo.weebly.com/uploads/1/3/1/0/131069808/6130147.pdfIn PDF document text
    • https://notefusiwedamap.weebly.com/uploads/1/3/4/8/134872173/3628091.pdfIn PDF document text
    • https://webunufilijamo.weebly.com/uploads/1/3/4/6/134677486/401d39eb0b38d6.pdfIn PDF document text
    • http://juwatorota.22web.org/50889886534.pdfIn PDF document text
    • https://zutupowetor.weebly.com/uploads/1/3/5/3/135350992/muzuxokogu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://worubag.epizy.com/93133436507.pdfIn PDF document text
    • http://jusisow.rf.gd/cube_world_ranger_guide.pdfIn PDF document text
    • http://warurodezum.epizy.com/bittorrent_movies_free_english.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/photoshop_brushes_free_cc_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/kogilojanivu.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/tesapavirejizuxowuxixakiw.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_off0000e37e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE37E 5496 bytes
SHA-256: 84f58bbf3a0250e51df3da5e6369170b822be742cef81d746ec16a0578ffceb8
font_01_sfnt_off0000f617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF617 17492 bytes
SHA-256: 2ec0005c98fc917f904b26b0d5be41be758f6dfcddd83172eca3b8de108d3e25