Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8567e552f7bc5f…

MALICIOUS

PDF

75.8 KB Created: 2022-04-14 12:46:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-08
MD5: a82d98f924705829143d2891d5013d55 SHA-1: 1ea7dde7a0cf9e1d0c7f30cfb42e00ed0c73ab8e SHA-256: cb8567e552f7bc5f6ac5a2eee2b54cdd82c1cdc404c683f39a95cbc067f2022f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://bappeda-jepara.org/app/webroot/js/kcfinder/upload/files/31017230970.pdf In PDF document text
    • http://www.espace-hotelier.com/ckfinder/userfiles/files/wadenonujejavow.pdfIn PDF document text
    • https://prizmaemys.com/img/files/72297877944.pdfIn PDF document text
    • https://tutorsbureau.net/userfiles/file/lofulosesivezumazozoz.pdfIn PDF document text
    • https://bodumiwi.weebly.com/uploads/1/3/1/4/131406735/a5ef685468.pdfIn PDF document text
    • https://lozorodarefela.weebly.com/uploads/1/3/2/6/132681783/ae62c2275dc.pdfIn PDF document text
    • http://werder-ritter.de/UserFiles/File/pemofuriwadosegedufula.pdfIn PDF document text
    • https://prolinenergy.com/Admin/plugins/ckeditor/kcfinder/upload/files/labofokajugodujadex.pdfIn PDF document text
    • https://namobilezivi.weebly.com/uploads/1/3/1/8/131857476/mixobi.pdfIn PDF document text
    • https://ijp2.com/contents/files/saxiwozovidegewirib.pdfIn PDF document text
    • http://gaongonmaiphuong.vn/webroot/img/files/fabijosisal.pdfIn PDF document text
    • https://luxury77.com/kcfinder/upload/files/kowojixite.pdfIn PDF document text
    • https://duboxudufafuboj.weebly.com/uploads/1/3/4/6/134676192/zikoka-kilomit.pdfIn PDF document text
    • https://gufunemoxopu.weebly.com/uploads/1/3/7/5/137507416/3168243.pdfIn PDF document text
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/9160246a2135673ebab6fe3d493d0207/tujiti.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622c01e77e996---6870746514.pdfIn PDF document text
    • https://xefapakofaguwa.weebly.com/uploads/1/3/1/1/131164324/5059445.pdfIn PDF document text
    • https://wivapitawipalex.weebly.com/uploads/1/3/2/6/132682528/lizegines.pdfIn PDF document text
    • https://wizitizisib.weebly.com/uploads/1/3/4/3/134361222/fofufedavix-mudonuj.pdfIn PDF document text
    • http://puginternational.com/ckfinder/userfiles/files/52274081732.pdfIn PDF document text
    • https://albertscience.com/ckfinder/userfiles/files/81908351029.pdfIn PDF document text
    • https://blagoustroystvo24.ru/ckfinder/userfiles/files/33478825646.pdfIn PDF document text
    • https://zerurejapom.weebly.com/uploads/1/3/5/9/135964845/ae4a3dcda4ea.pdfIn PDF document text
    • https://10s317.com/uploads/files/202203271518096239.pdfIn PDF document text
    • https://muwalarole.weebly.com/uploads/1/3/5/9/135959937/rebugonexuzivik-fepezozaleko.pdfIn PDF document text
    • https://podar.co.za/YmrXLWy8?keyword=bible%20verses%20about%20police%20brutalityPDF 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_off0000c5da.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c5da.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5DA 10736 bytes
SHA-256: 823a329a5940466a1967d5e5d404da3335420e50ca8be6b991660a2279de22ce
font_01_sfnt_off0000de88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE88 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f69a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF69A 16716 bytes
SHA-256: ecf4e53a96db1eb99788401f1395a9eaac97e3be93ea08110840add5d1d018a8