Malicious PDF — malware analysis report

Static analysis result for SHA-256 427148ccf9977d69…

MALICIOUS

PDF

70.3 KB Created: 2021-05-13 07:49:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4e86a3bdad37ac83c4fc6b489522e4fe SHA-1: 729b4c9d6e613dcd8d5af81a5831ebfe1166394a SHA-256: 427148ccf9977d699099df0673d3f60440ceabb12dfc5efeb98b38a30a504f8e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains a large number of external links, many pointing to disposable domains, indicating a link farm designed to distribute malware or lead to phishing sites. The presence of a 'download button' heuristic further supports a malicious intent to trick users into downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://botokaw.ru/strik?utm_term=seasons+printables+preschool PDF link annotation
    • http://kuvenumine.mygamesonline.org/how_much_do_oncology_dietitians_make.pdfIn PDF document text
    • http://vuvabadiredowa.getenjoyment.net/24126606229.pdfIn PDF document text
    • https://lomapasaxanigef.weebly.com/uploads/1/3/1/1/131164081/87c999747b46d0.pdfIn PDF document text
    • https://zutuvibob.weebly.com/uploads/1/3/1/4/131407898/subojidilav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423752/normal_60253569a08c0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491437/normal_6008278b3d798.pdfIn PDF document text
    • https://rarejiwu.weebly.com/uploads/1/3/1/6/131606055/c42f5.pdfIn PDF document text
    • https://moxetutatag.weebly.com/uploads/1/3/4/2/134234950/botilujikeboje.pdfIn PDF document text
    • https://derakudo.weebly.com/uploads/1/3/4/2/134266069/neboxoja-pazopu-kibidukiro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/919be955-f1c8-4340-8767-b938b77dc201/29284587891.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dac15022-72bc-4462-b746-43bfd957245d/saviwitud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a57783d6-dd75-4163-b378-997bc8e6fa15/how_much_does_mercedes_maintenance_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e9a0aa8-5e43-4fa4-bc56-9b19608f1b2a/how_to_put_on_gentle_leader_collar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b07f0645-7fc2-43a4-aea7-6c50fe19e91c/final_fantasy_xv_playstation_trophies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4eafeb00-78d8-45d9-89c1-04260198a31d/when_should_a_relationship_become_facebook_official.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91e45143-6f04-4b65-88af-81f62c2377f7/debudonekofaje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a896cbfb-a6ef-4ab5-b159-c6026cd76416/gufizebijaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8be2bac-e319-45b4-a5e7-68f560ac713d/kofipuboduzikubuve.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d71e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD71E 5264 bytes
SHA-256: d33c728cae5eb433673a5f2d769d010d7d44bf55124bf5bc16ef86b4101073f2
font_01_sfnt_off0000e8f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F3 10160 bytes
SHA-256: 3bbc493780c298ea06b41efc94613ee666c3b6355a59ec386ff2c2a728b4cee1