Malicious PDF — malware analysis report

Static analysis result for SHA-256 4256a53095f43aa1…

MALICIOUS

PDF

74.3 KB Created: 2022-05-01 09:37:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 43eebe352bd963ce2fc6fce051bc073a SHA-1: 94639a5e25ba2284355dd8f99cc49e644c59a7ac SHA-256: 4256a53095f43aa1ba2c9f563b482a6bb986ed39fa592ae58be7b4d0025bc788
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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=hoover%20steamvac%20deep%20cleaner%20f5807 PDF link annotation
    • https://lepimezuraz.weebly.com/uploads/1/3/4/5/134599896/5471538.pdfIn PDF document text
    • http://studiotecnicostradi.eu/userfiles/files/vuval.pdfIn PDF document text
    • https://mixunolonuwoja.weebly.com/uploads/1/3/0/9/130969204/3834410.pdfIn PDF document text
    • http://yuha.be/admin/kcfinder/upload/files/90256116842.pdfIn PDF document text
    • http://robertoantoniz.com/resources/original/file/vizewemigeg.pdfIn PDF document text
    • https://livogubajilu.weebly.com/uploads/1/3/4/3/134374442/lupivetoxu.pdfIn PDF document text
    • https://calmoinc.com/upload/editor/file/14416976486.pdfIn PDF document text
    • http://1mosref.ru/ckfinder/userfiles/files/nulun.pdfIn PDF document text
    • https://inijariku.com/ckfinder/userfiles/files/38220158912.pdfIn PDF document text
    • https://podowojupipiret.weebly.com/uploads/1/4/1/5/141525267/2a108c64ca.pdfIn PDF document text
    • https://wivirupi.weebly.com/uploads/1/3/4/6/134666213/595546.pdfIn PDF document text
    • http://www.armstrongre.com/files/files/75856499221.pdfIn PDF document text
    • http://jindi2010.com/uploadfile/files/34768104975.pdfIn PDF document text
    • http://etecpresidentevenceslau.com.br/kcfinder/upload/files/52709804810.pdfIn PDF document text
    • https://musebedufuboga.weebly.com/uploads/1/4/1/3/141307245/jujapuzineni.pdfIn PDF document text
    • https://kimakinogi.weebly.com/uploads/1/3/0/7/130775446/dibopovato.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/6f779455e48f0a0444ac2e70db0fedb1/wuwilufotapomiw.pdfIn PDF document text
    • https://lonamoki.weebly.com/uploads/1/3/5/9/135964194/11489.pdfIn PDF document text
    • https://xekejinobo.weebly.com/uploads/1/3/0/7/130776350/borilasufujejilox.pdfIn PDF document text
    • https://sozefusezat.weebly.com/uploads/1/3/4/8/134860931/luxisufanipuxebu.pdfIn PDF document text
    • https://kabraclothingcorp.com/userfiles/file/ligan.pdfIn PDF document text
    • https://megelegekirir.weebly.com/uploads/1/3/4/4/134464092/9f4b9216bc3.pdfIn PDF document text
    • https://navemozozaju.weebly.com/uploads/1/3/1/1/131164567/4181065.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_off0000bc81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC81 16572 bytes
SHA-256: d057e23c601fa56081db46345a1a4c68da91367641c5db96ce76a8df3b67c956
font_01_sfnt_off0000e7b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ffca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFCA 11260 bytes
SHA-256: 95c95aaf8c43efdc6493989e0e3f17e40dcb9b9feaa0e0045e1b73a4a653d2b0