Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc8ed58dda25afc…

MALICIOUS

PDF

116.8 KB Created: 2022-04-06 00:47:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: 6d1cea56d6b78f6c90d9e755dcff9d3f SHA-1: 868bec64bbcba303d70986a35df10bc544a6113f SHA-256: 1dc8ed58dda25afca322c4ea6c989801e3702a9c148fe9a7a555c93d8ff1390c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://yubit.co.za/YmrXLWy8?keyword=against%20interpretation%20and%20other%20essays PDF link annotation
    • https://kewejoxenolubur.weebly.com/uploads/1/3/5/9/135966954/7426325.pdfIn PDF document text
    • http://vino-charlie.cz/userfiles/file/82688816473.pdfIn PDF document text
    • http://epmresearch.org/userfiles/files/77154185747.pdfIn PDF document text
    • https://westpakusa.com/phpsites/vertical_living/uploads/file/fawone.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1622551bddaa0e---74432007354.pdfIn PDF document text
    • http://rracc.com/file_media/file_image/file/pamemofufebagefazofevu.pdfIn PDF document text
    • https://nsaimmigration.com/userfiles/file/lawokim.pdfIn PDF document text
    • https://rifubagozoj.weebly.com/uploads/1/3/2/6/132695416/jevosat-xamefer-nokulutudiwubok.pdfIn PDF document text
    • https://nuvugokub.weebly.com/uploads/1/3/4/0/134016684/54e6b.pdfIn PDF document text
    • https://ditufanavuj.weebly.com/uploads/1/3/0/7/130738569/wusewi.pdfIn PDF document text
    • http://qianxi.cn/filespath/files/20220309225624.pdfIn PDF document text
    • https://xn--80aujdnb8a.xn--p1ai/kcfinder/upload/files/vemugamegometosaxamevara.pdfIn PDF document text
    • https://zipatusuf.weebly.com/uploads/1/3/4/0/134012633/xuzoraxuxalus-xasim-jukufodimi.pdfIn PDF document text
    • https://binhvi.com/upload/files/90446939172.pdfIn PDF document text
    • http://nomorecpapmachine.com/userfiles/files/kutitononiwo.pdfIn PDF document text
    • http://uspeh-kursk.ru/ckfinder/userfiles/files/baxip.pdfIn PDF document text
    • https://xalovediluf.weebly.com/uploads/1/3/1/3/131380345/tovus-kimojixerawiz-vibuwekuveba.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

Related samples 8

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_off000166ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166ED 10720 bytes
SHA-256: 4673ddf3f97f2601a1fa98f72fb1c69b57ed235b2182a3eaa6287bb745a7f7f3
font_01_sfnt_off00017f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17F4E 17488 bytes
SHA-256: e6f962189e7769e62b50ff1379643e4733c22995a99e366d30edb096062375b7
font_02_sfnt_off0001acf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ACF2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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