Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9c3de316c5df243…

MALICIOUS

PDF

77.9 KB Created: 2022-03-30 03:54:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-25
MD5: db0d6519304e3f11118a5dd7f8b22611 SHA-1: b6b78d8159ceb6fa776aac3e062e9bd33bf94663 SHA-256: a9c3de316c5df24306eb8ded8d6be8663ecbe5463abdce82f2982b202baafb87
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 http://avision-italia.com/userfiles/files/39839428192.pdf In PDF document text
    • https://www.sherpachristain.org.np/ckfinder/userfiles/files/1561959834.pdfIn PDF document text
    • http://dui-antidote.net/images/userfiles/file/siwovonebekagaf.pdfIn PDF document text
    • http://sdes.in/uploads/42043301733.pdfIn PDF document text
    • https://vufixedita.weebly.com/uploads/1/3/4/8/134884828/gebinubut.pdfIn PDF document text
    • https://vizifeji.weebly.com/uploads/1/3/0/7/130775372/xagusutew_zimomunipiboxuw_vevamo.pdfIn PDF document text
    • https://jimedugevebuz.weebly.com/uploads/1/3/4/4/134437071/0c6bfe0df678.pdfIn PDF document text
    • https://mesakarune.weebly.com/uploads/1/3/1/3/131380767/faxizijopi_dolerenovin_mofusasalabo.pdfIn PDF document text
    • https://neriguzoxivefu.weebly.com/uploads/1/3/5/3/135319498/niwixiwi_peben_molomafozelovot.pdfIn PDF document text
    • https://secolink.sk/userfiles/file/9075400381.pdfIn PDF document text
    • https://nipixejewawowe.weebly.com/uploads/1/3/0/8/130874539/zopanevex_todigoka_teludowusag.pdfIn PDF document text
    • https://kesiwupi.weebly.com/uploads/1/3/1/4/131407351/ribof.pdfIn PDF document text
    • http://clubcalidad.pfsgrupo.com/formacion/profesores/userfiles/file/mudixajojos.pdfIn PDF document text
    • https://xumogaveranowiw.weebly.com/uploads/1/3/4/3/134371782/887e4a8d93e.pdfIn PDF document text
    • https://degodowaserujes.weebly.com/uploads/1/3/4/4/134494515/gipewakogoruzil.pdfIn PDF document text
    • http://inspeq.eu/public/files/89217034716.pdfIn PDF document text
    • http://autoscuolecasetta.it/userfiles/files/40629917593.pdfIn PDF document text
    • http://captainkillmite.com/uploads/files/202202081553562769.pdfIn PDF document text
    • http://ambulatorioveterinariocamali.com/userfiles/files/26646380000.pdfIn PDF document text
    • https://cafij.co.za/YmrXLWy8?keyword=metro%202033%20walkthrough%20libraryPDF link annotation
    • https://www.synergyom.com/kcfinder/upload/files/24187098212.pdfIn PDF document text
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623d365e73111---mutebamiparutuwi.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000c972.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c972.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC972 17652 bytes
SHA-256: eaa2909767c96eb6db90ec5647805cf6756b5fb6afb8240f23b90dcf4472fa0d
font_01_sfnt_off0000f742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF742 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00010de6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DE6 11056 bytes
SHA-256: c408ed01d0258ec5c6e545d4ff80c1f25e9573483e9a912765d340837c3de3f7