Malicious PDF — malware analysis report

Static analysis result for SHA-256 63436d64f3b7afd4…

MALICIOUS

PDF

77.7 KB Created: 2022-04-01 15:02:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-29
MD5: a806bd3698480cdca80ce332b3c625c3 SHA-1: 1a8ff475ede31fbdb87820748df24c16bb26551c SHA-256: 63436d64f3b7afd42898ab65a8e8a40fc4ac2661bec7948ce3ffce56b76842d2
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://wirut.co.za/YmrXLWy8?keyword=julius%20caesar%20act%202%20discussion%20questions PDF link annotation
    • https://busofixi.weebly.com/uploads/1/3/4/5/134576252/3697823.pdfIn PDF document text
    • https://nomukemometikuf.weebly.com/uploads/1/3/1/4/131483138/6272d867a6164.pdfIn PDF document text
    • https://www.3zslitomysl.cz/admin/editor/kcfinder/upload/files/26599358735.pdfIn PDF document text
    • https://reroweno.weebly.com/uploads/1/3/4/6/134687099/9877513.pdfIn PDF document text
    • https://tiger-security.net/webroot/upload/files/34997041655.pdfIn PDF document text
    • https://womarunere.weebly.com/uploads/1/3/4/3/134315700/a26731f.pdfIn PDF document text
    • http://drxzhang.com/userfiles/file/37739867791.pdfIn PDF document text
    • http://musicincw.com/fckeditor/userfiles/image/jititurazikog.pdfIn PDF document text
    • http://shinyoungvalve.com/userData/board/file/xemidafomawefago.pdfIn PDF document text
    • https://sonalopuxarore.weebly.com/uploads/1/3/4/3/134310538/gijirarivos.pdfIn PDF document text
    • https://lejomibis.weebly.com/uploads/1/3/4/6/134657815/5480116.pdfIn PDF document text
    • https://femawigir.weebly.com/uploads/1/3/4/6/134661536/aaa9081781e9075.pdfIn PDF document text
    • https://mevesazikixewo.weebly.com/uploads/1/3/4/3/134366921/jamutekiwir.pdfIn PDF document text
    • https://kobalogowitat.weebly.com/uploads/1/3/0/7/130776452/8976278.pdfIn PDF document text
    • http://snnet.kr/board_pds/fckeditor/2022/02/file/67007007755.pdfIn PDF document text
    • https://rizegenaw.weebly.com/uploads/1/3/4/1/134108854/xemotirekejo-pakefe-dufinumuvok.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16231e3399e1f9---tejokasaniv.pdfIn PDF document text
    • https://motovosagufa.weebly.com/uploads/1/3/4/5/134513155/wigenipovinul.pdfIn PDF document text
    • https://iamtimeshare.com/userfiles/file/mesenosusunot.pdfIn PDF document text
    • https://foworagajiwodim.weebly.com/uploads/1/3/0/9/130969946/vopuw.pdfIn PDF document text
    • https://fozabenuguze.weebly.com/uploads/1/3/4/6/134685739/xidojezimitudupalej.pdfIn PDF document text
    • http://schokoladenfontaene.de/idata/44539378685.pdfIn PDF document text
    • https://palobakuk.weebly.com/uploads/1/3/4/5/134523632/sagodosofabotud-meridujoju-nozexuruneme.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 extracted file (font_00_sfnt_off0000cb95.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000cb95.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB95 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e3a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A7 16820 bytes
SHA-256: f3c9e3b52d82f78f9356c2423326c04f17684953b0e97352432adb3cf2dd657d
font_02_sfnt_off00010f70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F70 10720 bytes
SHA-256: 4acf3c6bc2540793b8e2f69ac516ae40d1765e1876340fa9c991f8dc9e4c1d65