Malicious PDF — malware analysis report

Static analysis result for SHA-256 94166ec8f8963aee…

MALICIOUS

PDF

77.4 KB Created: 2022-04-04 02:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: ab0e56d95126539776c28a0aa0928689 SHA-1: 2f3179d319364dcb94bdc1f81475bb6c244555ca SHA-256: 94166ec8f8963aee013bbdeea4bc62017ef00c42b756af2ce4cdb5dc9f9d8653
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and a large number of external links, many pointing to disposable hosting services. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm, suggesting a phishing or malware distribution scheme. The embedded JavaScript, while not fully analyzed due to obfuscation, likely contributes to the malicious functionality by redirecting users or downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://mifuj.co.za/YmrXLWy8?keyword=us%20history%20chapter%2014%20and%2015%20quizlet PDF link annotation
    • https://lapawiniposa.weebly.com/uploads/1/3/5/3/135323982/e84afc.pdfIn PDF document text
    • https://dalovoxibezovuk.weebly.com/uploads/1/3/4/6/134615649/3c310727c35859d.pdfIn PDF document text
    • https://vujexuxifu.weebly.com/uploads/1/3/0/7/130739824/a4c9ec66.pdfIn PDF document text
    • https://pusemajipi.weebly.com/uploads/1/3/4/4/134471733/nuboriguwulumez_xaxak_mifakinof_liloxinavoji.pdfIn PDF document text
    • https://lulolopan.weebly.com/uploads/1/3/5/3/135323706/07d5c0.pdfIn PDF document text
    • https://zegijavevezedoj.weebly.com/uploads/1/3/4/3/134309525/ae292f.pdfIn PDF document text
    • http://www.transfuzia.org/gfx/administration/js/ckeditor/kcfinder/upload/files/17716528778.pdfIn PDF document text
    • https://tejifogigevavep.weebly.com/uploads/1/3/4/6/134675995/121835.pdfIn PDF document text
    • http://contextuae.com/resimler/files/84208551504.pdfIn PDF document text
    • https://nelovemisero.weebly.com/uploads/1/3/4/3/134347795/4865646.pdfIn PDF document text
    • https://tovefejuxula.weebly.com/uploads/1/3/5/3/135325554/307532.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623577df56537---3372795122.pdfIn PDF document text
    • https://paymentor.nl/uploads/file/97501994350.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/54c03bc5ca10ddff4dd8972b8d48724c/vikelajenabijegi.pdfIn PDF document text
    • https://pukegivox.weebly.com/uploads/1/3/1/8/131856392/84542d4ba020.pdfIn PDF document text
    • https://xidibifolun.weebly.com/uploads/1/3/2/7/132710634/061d0.pdfIn PDF document text
    • https://tajixuxax.weebly.com/uploads/1/3/4/7/134751877/3261980.pdfIn PDF document text
    • https://verner.lt/images/files/forubumoko.pdfIn PDF document text
    • https://feruzizujuvete.weebly.com/uploads/1/3/0/7/130775768/12500b30ce84da.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_off0000c659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC659 17344 bytes
SHA-256: 1fd6d59882216140ba0366846f55a98778c042a63f9f18913557b4653f1c7734
font_01_sfnt_off0000f3e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E5 11300 bytes
SHA-256: 157331a225ff1c251c325c5654ebf509e73faa55cc0ffaf3d83bb8e351bb8a5f
font_02_sfnt_off00010e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E6B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1