Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb83cf2fcf1f8132…

MALICIOUS

PDF

74.0 KB Created: 2022-04-26 20:15:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 84dc08bc9becfc925a038fa93c22c91b SHA-1: 732295ff83ec8d5205e45a9c2f5593b45ef0d7ca SHA-256: cb83cf2fcf1f813281dfd56e19c5451ccfd2785d24a83251d00027bfb4d71fc7
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://sivavodafewe.weebly.com/uploads/1/3/4/4/134484486/jexuf.pdf In PDF document text
    • http://neogmbh.de/www/sites/default/files/userfiles/file/guxatule.pdfIn PDF document text
    • https://laxefozono.weebly.com/uploads/1/3/4/3/134361517/weveb-podexusisulajo-riluvepibus.pdfIn PDF document text
    • http://haciogullari.com/depo/sayfaresim/file/81993026433.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161fab8e87f0d2---87582772215.pdfIn PDF document text
    • https://mttrasportisrl.it/dati/upload/file/dozerogugazozef.pdfIn PDF document text
    • https://bizigixuwufi.weebly.com/uploads/1/3/4/6/134692051/kuramalifid.pdfIn PDF document text
    • https://derodaju.weebly.com/uploads/1/3/1/6/131606282/6a9e94f2c3.pdfIn PDF document text
    • https://xemuvexakono.weebly.com/uploads/1/3/4/6/134655393/wufixekojap-mexotimapa-wumapoleporu-lemik.pdfIn PDF document text
    • http://elosc.com/upFile/file///ITX202203141650135357.pdfIn PDF document text
    • https://fiwuwilal.weebly.com/uploads/1/4/1/4/141467343/40f968c.pdfIn PDF document text
    • https://egyiksem.hu/uploads/file/81258213199.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/82fe0f0a692f16ae89ad5b9334121b0b/kekepivofipiwuraguwilesu.pdfIn PDF document text
    • https://dopatojibeforu.weebly.com/uploads/1/3/0/9/130969701/ximibeja.pdfIn PDF document text
    • https://wazurewimi.weebly.com/uploads/1/3/4/5/134598950/2461465.pdfIn PDF document text
    • http://ngocvietbungalow.com/upload/files/96583071840.pdfIn PDF document text
    • https://vurolopifimik.weebly.com/uploads/1/3/4/8/134886635/6279346.pdfIn PDF document text
    • http://greenburysecondary.co.za/kcfinder/upload/files/27517793967.pdfIn PDF document text
    • https://gurazelifu.weebly.com/uploads/1/3/0/8/130874247/bibopivafe-gigotafesimutad-lusak.pdfIn PDF document text
    • https://wugemevafiditi.weebly.com/uploads/1/3/4/3/134382928/3ab009.pdfIn PDF document text
    • https://mifuj.co.za/YmrXLWy8?keyword=cloud%20computing%20tutorial%20for%20beginners%20with%20examplesPDF link annotation
    • 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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000b9c4.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b9c4.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b9c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9C4 17316 bytes
SHA-256: 4cb81cdb49701c3b2ceda66af6a6e3db5adf023ab0be44e974ee4927bca52aa0
font_01_sfnt_off0000e6f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ff10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF10 11524 bytes
SHA-256: e4fdb4c16a8d915b686abd7fb5df9659a7b8d5cc64221ff5d96cc9d5fbb2500e