Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3c3ae9a11c41fb…

MALICIOUS

PDF

74.6 KB Created: 2021-10-13 16:35:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 68ea5a883297bd7be3867d3c00264e79 SHA-1: 6c1bf9e1aa2ff461449007877506ef5d810ea543 SHA-256: 4e3c3ae9a11c41fbc4d82bc0b4beda4309cfaf8b23c69db18ab959dfd9b89e96
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://ketchas.ru/uplcv?utm_term=code+word+for+d PDF link annotation
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/62460ccac3c32140308f493ff7d58f3d/94099568010.pdfIn PDF document text
    • http://bookblog.kr/data/file/files/viwipimogo.pdfIn PDF document text
    • http://kaizousha.com/js/upload/files/89766446064.pdfIn PDF document text
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161420acf7b7c0---14018023246.pdfIn PDF document text
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/6a468aac9619064676bb4f3492a34a02/25842533761.pdfIn PDF document text
    • http://jshanwoo.com/ckfinder/userfiles/files/nexomovuxobuw.pdfIn PDF document text
    • https://pingthye.com/userfiles/files/2340358299.pdfIn PDF document text
    • http://www.clc-engineering.com/siteuploads/editorimg/file/sikibovolig.pdfIn PDF document text
    • https://frigosztufi.ro/ckfinder/userfiles/files/88751978097.pdfIn PDF document text
    • http://controldellaves.com/app/webroot/arxius/file/zodonejivad.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/ppilcv07b4hrtlmf8g1neqq8e5/68474702429.pdfIn PDF document text
    • https://www.cifphosteleriayturismo.es/ckfinder/userfiles/files/81645871076.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/h6kodj0f42avtt3l1dt2hvvpt4/powewabadanuposedigekan.pdfIn PDF document text
    • https://nutricount.cz/UserFiles/File/62186910398.pdfIn PDF document text
    • http://carrasvilla.es/uploads/files/94118118360.pdfIn PDF document text
    • http://tunglamgarden.com/images/fck/file/40490277232.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/2cvi1utmliu13pok0td8tvagv9/sodip.pdfIn PDF document text
    • https://austarpharma.com/upload/files/37823071658.pdfIn PDF document text
    • http://mylodge-naoshima.com/images/blog/file/nekokip.pdfIn PDF document text
    • http://air-separation-supplier.com/d/files/37449768406.pdfIn PDF document text
    • http://mousike.it/img_ins/files/vizawetajabuvusefox.pdfIn PDF document text
    • http://malir-naterac.info/UserFiles/File/movujajez.pdfIn PDF document text
    • http://mtsp.by/userfiles/files/jawozoponejofavigulezejez.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/b8f0f8db8b92b6e88a222973eb15922d/82198405038.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC392 17192 bytes
SHA-256: a75ba24a6d64785a1c7e73b4a919142224a262edfde971eb787373fe6640f995
font_01_sfnt_off0000efbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBC 9792 bytes
SHA-256: 0bb78db531a2fce4a0a2394139fe3c95164fea43ddd7ea931f18b09c579df33f
font_02_sfnt_off00010558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10558 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1