Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6e8cc141cc96a02…

MALICIOUS

PDF

160.3 KB Created: 2021-12-06 23:54:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-17
MD5: 002ab5281a0367042a20c3db85137df8 SHA-1: be5fe832ed07d9dd4cbc15ccb8e1238f389d8070 SHA-256: b6e8cc141cc96a02b4e0fbc2b9fc2318526c92ec14a603a09983fa0c88f25250
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9581

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
  • 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.
  • 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://kooijobs.in/ckfinder/userfiles/files/xolevafuseb.pdf In PDF document text
    • https://philly.drinkpoint.com/uploads/files/wanunifaz.pdfIn PDF document text
    • https://studiovizia.com/webroot/img/content/files/22432658296.pdfIn PDF document text
    • http://gamaxmotor.cz/data/dokumenty/22324864662.pdfIn PDF document text
    • http://vasset.bg/userfiles/file/rebufegokobamigubin.pdfIn PDF document text
    • http://bajcsidavidfoto.com/_user/file/vilokusodurifazedabizarig.pdfIn PDF document text
    • http://kaushalacademy.org/ckfinder/userfiles/files/kudida.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/2280714018.pdfIn PDF document text
    • https://mindtrainingsystems.com/userfiles/file/99104817333.pdfIn PDF document text
    • https://patriciogaete.com/upload/file/67194932828.pdfIn PDF document text
    • https://samuelben-horin.com/userfiles/file/87520308724.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/93082b06528adf4854b289a521eec43c/39906106973.pdfIn PDF document text
    • http://dlshixiang.com.cn/ckfinder/userfiles/files/54307626399.pdfIn PDF document text
    • http://eastcoastbiker.de/sites/default/files/file/wofavorobixuvitag.pdfIn PDF document text
    • http://pxmonastery.org/CKEdit/upload/files/pebapapiborur.pdfIn PDF document text
    • https://radio-clipa.ro/userfiles/file/vopaduliselepubovelidal.pdfIn PDF document text
    • https://kuwaitpolyurethane.com/ckfinder/userfiles/files/zixojopalexebenawusitil.pdfIn PDF document text
    • http://leebyunghun.org/new/upload/board/files/jutojigonatozidimidesoza.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1618bb52812842---24439463456.pdfIn PDF document text
    • https://www.aspart.ro/ckfinder/userfiles/files/76731902022.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe7670ba22---71234228366.pdfIn PDF document text
    • https://plentis.eu/ckfinder/userfiles/files/79300792343.pdfIn PDF document text
    • http://ventima.ru/userfiles/file/15875335272.pdfIn PDF document text
    • https://naves.cz/res/file/77819364493.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/HKUGBsJGI0E/uplcv?utm_term=john+mellencamp+check+it+outPDF 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_off00020942.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00020942.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00020942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20942 10556 bytes
SHA-256: 3cd3a7c5a3b5fb4355e245b0e29659a3962238f5a276cb7a4ce237a90b0106e8
font_01_sfnt_off00022122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22122 19084 bytes
SHA-256: 2b07802ec9b089760ba470043d2c28f19341293c774274739ba8ae1a698a4529
font_02_sfnt_off00025292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25292 1780 bytes
SHA-256: cf43ea07d0e14c5dadc3c8d1a3fd6347ba51c91ab3c5d9ef8ee3d45ec84741db
font_03_sfnt_off00025aff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25AFF 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336