Malicious PDF — malware analysis report

Static analysis result for SHA-256 941b2cf17eb0b415…

MALICIOUS

PDF

76.3 KB Created: 2022-04-19 21:33:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 4fcbb3aa1005d1f027de353cf424326c SHA-1: fd4c8f45e531fcb3e064b0654d5e79ef4cbcd921 SHA-256: 941b2cf17eb0b415612a076710aa895b68bc3048d41f6f5ca7cfa7bd826eba67
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript, which is often used to initiate malicious actions. The heuristic firings indicate a significant number of external links, forming a link farm, with some hosted on disposable domains. This suggests an attempt to redirect users to potentially malicious content or phishing sites. The ClamAV detection further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://loheb.co.za/YmrXLWy8?keyword=sas%20ods%20excel%20tagattr%20format PDF link annotation
    • http://kochi-east-rc.com/admin/kcfinder/upload/files/32875671953.pdfIn PDF document text
    • https://5050562.ru/artimg/files/66801738395.pdfIn PDF document text
    • http://leaguengn.com/userfiles/file///21292213046.pdfIn PDF document text
    • https://renokiva.weebly.com/uploads/1/3/4/3/134353994/e9c2fc252f.pdfIn PDF document text
    • https://lonexababite.weebly.com/uploads/1/3/1/1/131163854/ed983024324.pdfIn PDF document text
    • https://www.eurosecurimed.com/ckfinder/userfiles/files/82227701653.pdfIn PDF document text
    • http://chronoflex-dz.com/app/webroot/assets/js/kcfinder/upload/files/79797508148.pdfIn PDF document text
    • http://closehorses.com/userfiles/file/27840657842.pdfIn PDF document text
    • https://nulebuset.weebly.com/uploads/1/3/1/4/131411431/jubafipisaxa_javeguxojoxof_nasuzekiwat.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16249dedcb8906---93335632935.pdfIn PDF document text
    • http://test.currentaffairsfunda.com/assets/kcfinder/upload/files/wutoruwi.pdfIn PDF document text
    • https://viadagio.be/userfiles/file/lizazogijolamuki.pdfIn PDF document text
    • https://dudafenerow.weebly.com/uploads/1/3/4/9/134900552/zabugev-lulowaba-rigodojakul.pdfIn PDF document text
    • https://kazefapakoj.weebly.com/uploads/1/3/4/6/134644741/3187447.pdfIn PDF document text
    • https://sarejazaxixosib.weebly.com/uploads/1/3/4/6/134633098/sajoxixitigaz.pdfIn PDF document text
    • https://gasinokumujum.weebly.com/uploads/1/3/1/4/131437883/04778c4c20866c.pdfIn PDF document text
    • http://daehnfeldt.com/userfiles/file/gaguvakodewukawululeneja.pdfIn PDF document text
    • http://studioambienteterritorio.it/userfiles/files/18880240176.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/e2a1aad50caeef7084e221602cd33b1f/84592312523.pdfIn PDF document text
    • https://xemubafuwifo.weebly.com/uploads/1/3/4/4/134475424/tawezeridewitake.pdfIn PDF document text
    • https://jitugexe.weebly.com/uploads/1/3/0/9/130969989/75c762a10.pdfIn PDF document text
    • https://gulecbakliyat.com/panel/kcfinder/files/12462926835.pdfIn PDF document text
    • http://kommunikator.nu/demo/userfiles/file///50872735905.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_off0000c0c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0C8 18688 bytes
SHA-256: dad493b76d9177c0a058cc89c429611f03e92103c60ed101559ebc3c1dedff4e
font_01_sfnt_off0000f2e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFD 10800 bytes
SHA-256: 4e95ba222e4725b8d3788eb39ac8f3007345b48aa8a7cd70f5bfc54a0108d887