Malicious PDF — malware analysis report

Static analysis result for SHA-256 44526ae6779e6147…

MALICIOUS

PDF

65.6 KB Created: 2022-04-01 17:40:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 72c86f28108ffcddea1c2e15982a2cfe SHA-1: 8c8ba7ab989c2d8f8ee1170477d00649eeb95108 SHA-256: 44526ae6779e6147aadf62d97518107352a6ebda6b9a2541bb391a1fcb314e40
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and is identified as a link farm, with numerous external links pointing to other PDF files hosted on various domains. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for exploiting PDF vulnerabilities or redirecting users.

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://lovig.co.za/YmrXLWy8?keyword=intermediate%20microeconomics%20with%20calculus%20a%20modern%20approach%20media%20update PDF link annotation
    • https://gefivepuli.weebly.com/uploads/1/3/4/6/134620723/8f08b65424e.pdfIn PDF document text
    • https://wumaluruporemad.weebly.com/uploads/1/3/0/9/130969386/1bf76.pdfIn PDF document text
    • https://jeneifogaszat.hu/cikkdata/files/mepibezuxawa.pdfIn PDF document text
    • http://dishandspoonproductions.com/ckfinder/userfiles/files/67999587383.pdfIn PDF document text
    • http://mmckno2010.zkosuchdol.info/files/79382331167.pdfIn PDF document text
    • https://wabemogulumog.weebly.com/uploads/1/3/4/3/134384503/3486706.pdfIn PDF document text
    • https://niwosegebopusa.weebly.com/uploads/1/3/4/5/134583118/f31a04d1b0a1.pdfIn PDF document text
    • https://www.smilinghorseranch.cz/domains/smilinghorseranch.cz/public/js/kcfinder/upload/files/75501044591.pdfIn PDF document text
    • http://vincitydata.com/uploads/ckfinder/files/32232349992.pdfIn PDF document text
    • http://imobiliariaimperio.com/files/files/25451176462.pdfIn PDF document text
    • http://npi-management.com/ressource/site-image/files/71557154171.pdfIn PDF document text
    • https://hw-power.com/uploads/ckfiles/files/6217f92d88151.pdfIn PDF document text
    • http://abpaluso.com/upload/file/81413802553.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f9dd3a3f0d5---45231762422.pdfIn PDF document text
    • https://ever-progress.com/upload/files/sesasigejudafidizadalof.pdfIn PDF document text
    • http://npas.ru/pic/file/2910193676.pdfIn PDF document text
    • http://costruzionibulagna.it/userfiles/files/85473064672.pdfIn PDF document text
    • https://pidofuvu.weebly.com/uploads/1/3/0/7/130739764/bubazabujorafusodan.pdfIn PDF document text
    • http://vintagesilverrose.com/admin/ckeditor/kcfinder/upload/files/54423150450.pdfIn PDF document text
    • https://vesitunerenos.weebly.com/uploads/1/3/5/3/135338192/89e8dc73b7.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_off00009a84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A84 10916 bytes
SHA-256: 6e24f53ab1aa0d68c1c322ac817d8ee547ca00a8eaf049db187db8ca5a96d054
font_01_sfnt_off0000b3a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3A1 17284 bytes
SHA-256: 41382123198b3ff3c5c73bca718096c4a5436d93c40ca17b6cb1c1cdc65dad8b
font_02_sfnt_off0000e01e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE01E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1