Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4ef69728b0f4fc…

MALICIOUS

PDF

82.0 KB Created: 2022-05-01 21:07:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-03
MD5: 99c5ae0b26cc8205a97da632bed969c1 SHA-1: faaa0257484364cb1cf3e70bad1e25106b16a187 SHA-256: de4ef69728b0f4fca247c91e55f87267fbd1f298ce05b6370d4a5333b744fa0b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://hosteleriayvending.com/ckfinder/userfiles/files/24112851327.pdf In PDF document text
    • http://architetturaurbanistica.it/userfiles/files/zizop.pdfIn PDF document text
    • http://poliman.srv.br/assets/kcfinder/upload/files/32493677117.pdfIn PDF document text
    • https://gawidosenadipag.weebly.com/uploads/1/3/1/0/131069875/20c8e.pdfIn PDF document text
    • https://jofajode.weebly.com/uploads/1/3/5/3/135346524/sojojapax.pdfIn PDF document text
    • http://sreecollegeofpharmacy.com/admin/kcfinder/upload/files/99882561250.pdfIn PDF document text
    • http://tid.vn/upload/files/jajes.pdfIn PDF document text
    • https://htkvn.vn/public/admin/plugins/kcfinder/upload/files/23363659757.pdfIn PDF document text
    • https://gitosupogule.weebly.com/uploads/1/3/2/7/132741155/sizegifoporusedi.pdfIn PDF document text
    • https://kipunokazapalu.weebly.com/uploads/1/3/4/7/134774983/liretiguguvokoduves.pdfIn PDF document text
    • https://vivuguduwidu.weebly.com/uploads/1/3/2/6/132681484/damolida.pdfIn PDF document text
    • https://vuwezamubom.weebly.com/uploads/1/3/0/8/130814902/wifejuk.pdfIn PDF document text
    • http://huiking.cn/uploads/file/011845239729.pdfIn PDF document text
    • https://tifegoguxefufi.weebly.com/uploads/1/3/1/6/131637953/goxefu.pdfIn PDF document text
    • https://kikosezuzo.weebly.com/uploads/1/3/1/3/131378972/81c46fb.pdfIn PDF document text
    • http://zamel2.pl/userfiles/file/sowijamijamexunube.pdfIn PDF document text
    • http://twilaw.com/files/files/zevavidadorikiri.pdfIn PDF document text
    • https://mowewudogib.weebly.com/uploads/1/3/5/3/135310369/040fea4b2fe.pdfIn PDF document text
    • https://gofasajuv.weebly.com/uploads/1/3/4/3/134359632/a45da8.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/nolibun.pdfIn PDF document text
    • http://penzionnakrizankach.cz/ckfinder/userfiles/files/xugulululodokasigamal.pdfIn PDF document text
    • https://colod.co.za/YmrXLWy8?keyword=evermore%20alyson%20noel%20quotesPDF 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_off0000dca2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000dca2.bin)

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA2 10588 bytes
SHA-256: 4c7092fab1a4b06693e2cfb6b154d4499e30ec137426045431f6023fc8c5375f
font_01_sfnt_off0000f4e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010cf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF6 17040 bytes
SHA-256: 45c885e2d12ec68848cb33681265ab99e7046d50a7ae929f3dcbb76b256c1ec1

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