Malicious PDF — malware analysis report

Static analysis result for SHA-256 441f738cc0ddf8a6…

MALICIOUS

PDF

78.1 KB Created: 2022-04-07 00:40:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-05
MD5: 153521d1b5b47cbec6cf2699a2d5edc1 SHA-1: 37de28f0763dd8b4cf8ddac1ef4a0bb5d4967ae3 SHA-256: 441f738cc0ddf8a6ef56a0275a00c64a715001e9f3e24636b4f947cff4c9c971
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://gimhaejazz.com/fckeditor/userfiles/image/31505915080.pdf In PDF document text
    • https://lepinacle.hk/editor_upload/file/77651235424.pdfIn PDF document text
    • https://coe-project53.istc.int/app/webroot/js/kcfinder/upload/files/78364425127.pdfIn PDF document text
    • https://numojenemisuben.weebly.com/uploads/1/3/2/3/132303045/xumabaxezelov.pdfIn PDF document text
    • https://xosesobo.weebly.com/uploads/1/3/4/6/134697532/29b4bd46ab.pdfIn PDF document text
    • https://dopovebo.weebly.com/uploads/1/3/4/4/134431975/6190671.pdfIn PDF document text
    • https://letenusesek.weebly.com/uploads/1/3/4/3/134310332/9694739.pdfIn PDF document text
    • https://mepubigavij.weebly.com/uploads/1/3/4/5/134599646/9755962.pdfIn PDF document text
    • https://xuzelete.weebly.com/uploads/1/3/2/6/132681171/fawekimefo_rakiwofog.pdfIn PDF document text
    • https://juliminure.weebly.com/uploads/1/3/4/7/134746733/wopuxuxorakaliduz.pdfIn PDF document text
    • http://zs-g.jp/app/webroot/js/ckfinder/userfiles/files/27698789514.pdfIn PDF document text
    • https://linizudozurori.weebly.com/uploads/1/3/4/6/134640128/webakejamogeke.pdfIn PDF document text
    • https://mawuredover.weebly.com/uploads/1/3/5/9/135957038/sawoga.pdfIn PDF document text
    • https://rigunebabadar.weebly.com/uploads/1/4/1/2/141250370/6281899.pdfIn PDF document text
    • https://magiriwumup.weebly.com/uploads/1/3/4/8/134866691/perizarigi_soliwod_famugusuxut_jobokegisaw.pdfIn PDF document text
    • https://voctestbursa.org/editconsole/kcfinder/upload/files/dasisomoku.pdfIn PDF document text
    • http://china-zub.ru/userfiles/file/20946367972.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16211d79e44c42---97088031371.pdfIn PDF document text
    • https://dosasefezopalan.weebly.com/uploads/1/3/1/3/131398547/zujokuzimajon-kamesogama-tukez.pdfIn PDF document text
    • https://katudiwuf.weebly.com/uploads/1/3/6/0/136006549/934e2c8af.pdfIn PDF document text
    • https://sunuf.co.za/YmrXLWy8?keyword=what%20is%20urban%20landscape%20photographyPDF 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_off0000cdae.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000cdae.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDAE 16380 bytes
SHA-256: fa68a1ba414deec48c41a5cc58002bed756bb3c9f6ecc8d9071c8468f10f98b9
font_01_sfnt_off0000f836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF836 11140 bytes
SHA-256: 98fc09f4fdbd2398e2e4713c7af4cc19aadedd197eb9b8df4cc5172695951f85
font_02_sfnt_off000111c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111C9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1