Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a139c6e12a4c481…

MALICIOUS

PDF

85.9 KB Created: 2022-05-02 19:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-31
MD5: 1bd963922959f56a0471d9bbca8cd1c2 SHA-1: 6e25b9fe9f69a398f021837d142b7d6940b4ee80 SHA-256: 5a139c6e12a4c481a088d3b078ac0656fd211eddc2fbdd1f9e5e05a4281db264
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9780

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://sunuf.co.za/YmrXLWy8?keyword=what%20is%20the%20verizon%20error%20code%201001 PDF link annotation
    • http://nifaelectronics.com/userfiles/file/pepokaduji.pdfIn PDF document text
    • https://kudalaxofof.weebly.com/uploads/1/4/1/4/141431246/zetukujug.pdfIn PDF document text
    • https://jolewewovu.weebly.com/uploads/1/3/6/0/136087062/d8b68b.pdfIn PDF document text
    • https://vieclamlaocai.vn/webroot/img/files/xugamubepifa.pdfIn PDF document text
    • http://beiks.info/public/file/wofimubiganolifin.pdfIn PDF document text
    • http://atletika-pardubice.cz/files/file/95895064457.pdfIn PDF document text
    • https://bipikodilupejaw.weebly.com/uploads/1/4/1/3/141379510/vefifija-bowumanorav-vemazekumipug.pdfIn PDF document text
    • https://sasepanubur.weebly.com/uploads/1/3/4/6/134600976/nugeni.pdfIn PDF document text
    • https://wupebeziwemipi.weebly.com/uploads/1/3/5/3/135315897/3323296.pdfIn PDF document text
    • https://wodubawise.weebly.com/uploads/1/4/1/2/141258013/e0e309949d.pdfIn PDF document text
    • https://myleague.vn/uploadfiles/kcfinder/files/liparifolezopotogoguxot.pdfIn PDF document text
    • https://zokagagewawo.weebly.com/uploads/1/3/4/3/134346606/496b583010fd975.pdfIn PDF document text
    • http://eintracht-bayreuth.de/kcfinder/upload/files/bobalasojeva.pdfIn PDF document text
    • https://mugibamarenov.weebly.com/uploads/1/3/4/1/134109107/mepuvelenuxiw_gesumosifamokis_liros.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1621e4bb1c2704---fivadagetigisepuforexoda.pdfIn PDF document text
    • https://bopenuxot.weebly.com/uploads/1/3/4/6/134667357/8721388.pdfIn PDF document text
    • https://viwapuse.weebly.com/uploads/1/3/5/3/135306484/8015249.pdfIn PDF document text
    • https://bofazoxoniwepiv.weebly.com/uploads/1/3/4/4/134454835/956b1fd1331.pdfIn PDF document text
    • http://sweethomedelivery.com/ckeditor/ckfinder/core/connector/php/uploads/files/7254798991.pdfIn PDF document text
    • https://welerenumabo.weebly.com/uploads/1/3/4/4/134467224/zefulovobiz.pdfIn PDF document text
    • https://quatden.vn/webroot/img/files/84567294672.pdfIn PDF document text
    • https://xamiziniroba.weebly.com/uploads/1/3/4/6/134601490/totoperufixowaluduxu.pdfIn PDF document text
    • http://sial.pl/galeria/file/xonubinizetelozoxasa.pdfIn PDF document text
    • https://dampinggame.com/calisma2/files/uploads/17456320414.pdfIn PDF document text
    • https://wepomiwukogufut.weebly.com/uploads/1/4/1/2/141281581/dc7d22080612b3.pdfIn PDF document text
    • https://aczelzalog.hu/tmp/bejonanodezuxumewox.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD604 10716 bytes
SHA-256: 1a5200f7f279fddd2f0b79c9a6b5eb1ab89a8ec0a98ffded8773a41edce1721c
font_01_sfnt_off0000eeb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB7 16708 bytes
SHA-256: fa857506782821d9ecfb0c242526292913db34995fe4034140b5723cabc0b1da
font_02_sfnt_off00011a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A35 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00013246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13246 16080 bytes
SHA-256: 2f1582c392244cc8e82654cac2cb77e5d9d2c421bb9509a139093d723174ec3d