Malicious PDF — malware analysis report

Static analysis result for SHA-256 191381da3a6c1dcd…

MALICIOUS

PDF

82.3 KB Created: 2021-08-25 06:02:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 6c6df2f06086103553e02ce0fea01528 SHA-1: 79d21b23207bf76beb8ab590f86e4e0e6630be6e SHA-256: 191381da3a6c1dcd078041ce439fcfa868042691d3c34f74e5986f69198137d1
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://cityfate.com/files/files/7484231002.pdf In PDF document text
    • https://barcelonamedicalcenter.com/files/galeria/files/44405175659.pdfIn PDF document text
    • http://montpellier-business-plan.fr/mbp/upload/images/images/upload/ckfinder/23688013579.pdfIn PDF document text
    • http://ewhamd.net/upFiles/ckeditor/files/lokotupujewirezulosebu.pdfIn PDF document text
    • http://dbexpertise.fr/catalogue_dynamique/file/lodidanijivag.pdfIn PDF document text
    • https://maplesservice.com/wp-content/plugins/super-forms/uploads/php/files/ef4d36367308d75a962a9c54e172c7a1/tavezetekegomuliwa.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/hbnacefhpsmn1ovreb0fs54j50/56169359282.pdfIn PDF document text
    • http://www.examnotice.in/uploads/files/gixekozatiwalo.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160aa7a2966604---92575509050.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/qj8hvg89ecf260g2hmc44di1k1/sijedij.pdfIn PDF document text
    • https://khotelmarket.com/FileData/ckfinder/files/20210629_E54BD7F0DDAD04BB.pdfIn PDF document text
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/f1048f81fb94a862023b25b69b524372/xifapo.pdfIn PDF document text
    • http://hz-karavany.cz/ckfinder/userfiles/files/36444485597.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a122136df31---64214272944.pdfIn PDF document text
    • http://carbontuning.ru/file/bimitamofozolalokabi.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/c6c82a4ac27a8e7f1c1fa80f5cf627ed/48012350512.pdfIn PDF document text
    • http://tmtechvn.com/webroot/img/files/82517010518.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/9f5b3deccf5a2702a88405e29dae101c/timudikojopod.pdfIn PDF document text
    • http://jr-bang.com/uploadfiles/20210609035947.pdfIn PDF document text
    • https://promobryansk.ru/userfiles/files/lexod.pdfIn PDF document text
    • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071193fdd284---54275397399.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/8443bd35f519cf977ab030b179b3db92/jemogolesakaz.pdfIn PDF document text
    • http://sitoad.com/bbqjoekey/files/202108071320203725.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=side+effects+of+overworkingPDF link annotation
    • 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_off0000dd95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD95 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f5ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5AC 10760 bytes
SHA-256: 5a54e797ee637d0762e3dd31306c70fa2f5b1fa3d6b37fc030fce536d3e816ea
font_02_sfnt_off00010e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E66 17376 bytes
SHA-256: 05b8e5758ee3cf45851cd523fba6e3eb1760bedf1b896e3b485f8506c6b4677c