Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0cb5581caacee80…

MALICIOUS

PDF

76.5 KB Created: 2022-05-10 16:47:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-02
MD5: d8bd8694af419271892e901bd22566f3 SHA-1: d028a7e5002bd15b731620b14465151f9d5e8f25 SHA-256: c0cb5581caacee802e35331d48b93ad5827e6ab45fa6b4b3ff4665eeb684a6fc
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=rule%20#1%20by%20phil%20town%20pdf%20free%20pdf PDF link annotation
    • http://desimlockage-telephone.fr/userfiles/file/zavapoluzeverixamak.pdfIn PDF document text
    • https://jefiwoso.weebly.com/uploads/1/3/5/9/135996081/a4eeb1d43802d81.pdfIn PDF document text
    • https://tirepululavapiw.weebly.com/uploads/1/3/4/5/134576363/wagabeserofel.pdfIn PDF document text
    • https://rizipotekam.weebly.com/uploads/1/3/4/6/134639676/e50a8c01c8c.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/162217f20cbcfd---kenomedofajifupakigakux.pdfIn PDF document text
    • http://artospace.com/pics/file/wezabizog.pdfIn PDF document text
    • https://tujiwukof.weebly.com/uploads/1/3/4/5/134592642/dimeweweb-doradarunajuk.pdfIn PDF document text
    • https://rudopiked.weebly.com/uploads/1/4/1/3/141383799/jamababajutifanog.pdfIn PDF document text
    • http://mkaudio.vn/app/webroot/uploads/files/xuwaxeluj.pdfIn PDF document text
    • https://fojomuku.weebly.com/uploads/1/3/4/4/134447263/bf0b2a1.pdfIn PDF document text
    • http://pharmorgsyn.com/upload/files/28003649909.pdfIn PDF document text
    • http://www.golfusa.be/userfiles/files/38693961819.pdfIn PDF document text
    • https://sipusojatavajuw.weebly.com/uploads/1/3/4/6/134606658/zozilonevaxunad.pdfIn PDF document text
    • http://xn--b1agpbmdtf.xn--p1ai/upload/file/66968962517.pdfIn PDF document text
    • https://nejituxunexako.weebly.com/uploads/1/3/2/7/132712325/benavobuxone-lotasol-nisafiroxalenuk.pdfIn PDF document text
    • http://diamantina-joaillerie.com/ckfinder/userfiles/files/38770322587.pdfIn PDF document text
    • https://sabatti.hu/admin/kcfinder/upload/files/kedokat.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_off0000cb44.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000cb44.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB44 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e35a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE35A 9396 bytes
SHA-256: eaec04442fb171dcee6b8d2d227970cd5423af64fe5b596882df234ce6481baf
font_02_sfnt_off0000f76a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76A 17064 bytes
SHA-256: 7aa3f65215f2d2f0dbccd8cae7d2672d779ebe4708aca3fa1b7399ab92769f6b