Malicious PDF — malware analysis report

Static analysis result for SHA-256 1913d6bd26baf566…

MALICIOUS

PDF

78.2 KB Created: 2021-11-13 14:10:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: b0f8af4aecba9368b2148a7176bca2ad SHA-1: 8327e065f3d7b240081bbb89879cc3d9b5d11f2b SHA-256: 1913d6bd26baf5666a8a9390ebbd35fd29e060727c5f5466d54a856c9b940900
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://ijpdua.com/contents/files/velituzezud.pdf In PDF document text
    • https://irepairplus.nl/app/webroot/files/userfiles/files/14853762799.pdfIn PDF document text
    • https://www.anoregmt.org.br/ckeditor/ckfinder/userfiles/files/borip.pdfIn PDF document text
    • https://www.dooleysnaturalgas.com/ckfinder/userfiles/files/fubogonagifunido.pdfIn PDF document text
    • https://dienmayngalinh.com/img/files/56013047463.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/5a71cd1330fdfe034f24e235bea09bee/vewazuwib.pdfIn PDF document text
    • https://studiecarriere.it/uploads/file/luxen.pdfIn PDF document text
    • http://rama-sp.com/rama/webroot/js/ckfinder/userfiles/files/nutuzonofidebugutubizig.pdfIn PDF document text
    • https://samoinstitute.samoinstitute.mn/uploads/assets/file/nerofid.pdfIn PDF document text
    • https://larustt.com/upload/ckfinder/files/xevis.pdfIn PDF document text
    • http://liceoadultos.juniorcollege.cl/userfiles/files/55032328940.pdfIn PDF document text
    • https://durimawar.com/contents/files/3398937207.pdfIn PDF document text
    • http://vedepcuaem.com/luutru/files/sutiwo.pdfIn PDF document text
    • http://jorkurojus.com/userfiles/file/xagitinafabazaxek.pdfIn PDF document text
    • http://lecostationery.com/files/file/zezavukumum.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/67396192845.pdfIn PDF document text
    • https://homeuu.biz/upload/ckeditor/pages/files/gajujili.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16168c5706bc62---pifetonoxalofuziwivatoxin.pdfIn PDF document text
    • https://ripedzn.com/app/webroot/files/fckeditor/file/35657407959.pdfIn PDF document text
    • http://irk-yoga.ru/upload/files/pojik.pdfIn PDF document text
    • http://mosme.org/uploadfile/files/nalukalabotizuvipumaxi.pdfIn PDF document text
    • https://akproauto.net/nbloom/fckuploads/file/35096852566.pdfIn PDF document text
    • http://rszm88.com/upfolder/e/files/20210909232915.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/am8q0lk134kgp3bmkp37vrj5eu/wonasutaxipudasuredudoj.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/2I9n2o-U8HI/uplcv?utm_term=proverbs+on+fruitsPDF 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE40 17992 bytes
SHA-256: 69251103af8da298e242cb6b882f08a0a428c097b71e4cf94ecb2e7d65bfaf89
font_01_sfnt_off0000fd0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD0F 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef
font_02_sfnt_off00011435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11435 10308 bytes
SHA-256: 5cad16844b0fab0ad21857b3fe4ad57eb960c66386f74e19c5067c880e30bf66