Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af7836b6c13cb05…

MALICIOUS

PDF

77.0 KB Created: 2022-04-07 23:37:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: ab4bc009c053c79d561c4bfa65456e06 SHA-1: c3a2ba947a8dd957cec1342278a3da3c91d40278 SHA-256: 4af7836b6c13cb054505bd6522c0dd823c15fd0e547bbab0a8ba558336667809
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 7

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://cafij.co.za/YmrXLWy8?keyword=why%20are%20honda%20generators%20so%20quiet PDF link annotation
    • https://wepotupibir.weebly.com/uploads/1/3/4/8/134881259/fd528efb91.pdfIn PDF document text
    • https://tozisodije.weebly.com/uploads/1/3/4/4/134486105/wetawusetiko-fotikilewufiba-vofar-peroguzunet.pdfIn PDF document text
    • https://vetaguluxidi.weebly.com/uploads/1/3/4/6/134656260/wolebadigarudoko.pdfIn PDF document text
    • https://zaxadumumuguxe.weebly.com/uploads/1/3/1/4/131454216/4886314.pdfIn PDF document text
    • https://access-etoile.edecision.fr/userfiles/file/79678736195.pdfIn PDF document text
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/zifuwibesinutix_davutago_luziwovomola.pdfIn PDF document text
    • https://fexupewoxi.weebly.com/uploads/1/3/4/6/134619994/kerozijog-xafuke.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620444cc2adb4---tetiporob.pdfIn PDF document text
    • https://muvekova.weebly.com/uploads/1/3/5/3/135394778/kusorivizuraloroza.pdfIn PDF document text
    • https://dilaxala.weebly.com/uploads/1/3/4/8/134865885/9d1727c843.pdfIn PDF document text
    • http://aryajob.com/user_upload/file/99265098385.pdfIn PDF document text
    • https://gutirevenomosub.weebly.com/uploads/1/3/5/4/135400373/f842e.pdfIn PDF document text
    • http://webmba.fr/client/logo/file/84100952498.pdfIn PDF document text
    • https://zozidilaxi.weebly.com/uploads/1/3/4/4/134491322/bulevidisojasoguni.pdfIn PDF document text
    • http://kramnyca.info/img/upload/editor/file/piremadewotozivanami.pdfIn PDF document text
    • https://xetolakovi.weebly.com/uploads/1/3/4/6/134604046/4685177.pdfIn PDF document text
    • http://rmgoals.com/userfiles/files/dowisalaviso.pdfIn PDF document text
    • https://pasosawa.weebly.com/uploads/1/3/4/7/134737133/sebakitufevogid.pdfIn PDF document text
    • http://top1np.com/ckfinder/userfiles/files/46078712372.pdfIn PDF document text
    • http://st-ark.it/userfiles/files/64950427780.pdfIn PDF document text
    • https://sesuzefodapu.weebly.com/uploads/1/3/2/8/132815176/4917650.pdfIn PDF document text
    • https://internationallanguagenavigators.com/media/wapaguleliwomotufanuzod.pdfIn PDF document text
    • https://xagapetudiza.weebly.com/uploads/1/3/4/6/134686513/bekizupes.pdfIn PDF document text
    • https://fijisakotapabe.weebly.com/uploads/1/3/4/0/134013267/dedevomi.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB03 10832 bytes
SHA-256: eadd71601af7dca0461ed1ac76b7762cc0cf7385e2c1d86b0f47783707e655f3
font_01_sfnt_off0000e37a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE37A 16516 bytes
SHA-256: b52dadc0de87c2678c70122bc191766559632f02ad8a6d0331e0482d23825ced
font_02_sfnt_off00010e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E2E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1