Malicious PDF — malware analysis report

Static analysis result for SHA-256 569a712b2816786e…

MALICIOUS

PDF

73.3 KB Created: 2021-08-06 10:07:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 2397a1aa4a26b0d29e608ad7d8c67156 SHA-1: 0b2dff4db73cf8bdeabacbcc509b72110a247ca7 SHA-256: 569a712b2816786e3009abf1df2acbe0ec8b6f283a6df427f0616de7d4e682fd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to multiple external URLs, some of which are hosted on compromised WordPress sites. The embedded URLs suggest an attempt to lure users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://nomylo.ru/uplcv?utm_term=film+chennai+express+full+movie+sub+indonesia PDF link annotation
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/olftmpv9iij1rrhhi7vppteeps/dedokewu.pdfIn PDF document text
    • http://ghioroiu.ro/sites/default/files/file/fobisusaj.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610cbdef07d6d.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/gt1ncu0c40h2sfvmrrpuhukqj7/99596179094.pdfIn PDF document text
    • http://valeneighbors.com/userimages/90553271669.pdfIn PDF document text
    • http://circuitoinsulargc.com/documentos/file/28675546615.pdfIn PDF document text
    • http://wallsfamilyreunion.com/clients/876683/File/95763921704.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/54f83199462d0a3658a681163152bbbd/luperekarewanuduvofek.pdfIn PDF document text
    • http://hnc2.com/userfiles/file/9118687995.pdfIn PDF document text
    • http://perseverance.cyou/updatefiles/file/gikabudabedibaw.pdfIn PDF document text
    • http://comlark.ru/userfiles/files/66535182118.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/79c80b645bbba401055b89f0a837e4fe/62535915190.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a9a0327c94---binofonuxewoketepir.pdfIn PDF document text
    • https://terlickodds.cz/www/www/fckphotos/file/voruzof.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606fca423b6af---22123501868.pdfIn PDF document text
    • http://hondatayho.vn/images/ckeditor/files/40537730129.pdfIn PDF document text
    • http://kursadowicz.pl/Upload/file/12368188742.pdfIn PDF document text
    • https://www.sudburyhighspeedinternet.ca/wp-content/plugins/super-forms/uploads/php/files/0c674be6995bf2fbfa5ed0531310cd34/mubadajamemaso.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/28489252281.pdfIn PDF document text
    • https://feng-shuiworld.com/userfiles/file/jejebalajasix.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160fe6de64eaea---wekazusagixusi.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_off0000b993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB993 16544 bytes
SHA-256: 4da101157f876d4da35f7632e06c264f3f401caad42ad0a06cb4b634872525a8
font_01_sfnt_off0000e425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE425 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fc3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3C 11172 bytes
SHA-256: 584b0e2dd267f5658b445aaa85d3c1154b1103e704c1611a9d57456f19e2c5c9

Open this report in the interactive analyzer, or submit your own file for analysis.