Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec6890025f65a23…

MALICIOUS

PDF

84.2 KB Created: 2021-09-01 19:18:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: c136f9f3b63f44c40a1fb425fe5a135a SHA-1: 204612f797c27c184a765aca71d0c1d832b36012 SHA-256: 7ec6890025f65a232d79fa6b46fc103d222367efeb7b7b885cefa09a02567e18
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. It contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest this document is part of a phishing campaign or a downloader for further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://allytemp.ru/uplcv?utm_term=motor+vehicle+act+1988+section+112 PDF link annotation
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/ffl6kgf9o0vem92h1h6dh2eogk/68657604827.pdfIn PDF document text
    • https://fullprotec.com/ckfinder/userfiles/files/butejazajemosawurex.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076c46507fa6---81576252326.pdfIn PDF document text
    • http://modero.vn/upload/files/vimokatubuna.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dcd24d0404e---42701646277.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/al05fhmath9p7i3fg55hcpuqp1/99713006423.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1609010d1d000f---tolafumewebuzemite.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c12515243fc---pemuje.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/1245d6d24a3ce7bb0e76912fde2a1084/55997812165.pdfIn PDF document text
    • http://dichvu12h.net/userfiles/file/febuvenaloxexebiwalozo.pdfIn PDF document text
    • http://misosmile.com/upload/editor/files/sapebe.pdfIn PDF document text
    • https://ringid.vn/ckfinder/userfiles/files/gekasorafizo.pdfIn PDF document text
    • https://www.ksmt.edu.np/assets/ckfinder/userfiles/files/tanibazef.pdfIn PDF document text
    • http://nextgt.eu/uploads/file/7490045251.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/1661o67iff75j6d2q5n32pf0o4/memevitijogenakebudevase.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1609c3c8a26bc4---vanewusedasawemaxutu.pdfIn PDF document text
    • http://yunnanyingxiang.com/ckfinder/userfiles/files/nepedukepinosik.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c9928b8f8b8---kodabiwifepi.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/juwemap.pdfIn PDF document text
    • https://bauarch.bg/files/45114750746.pdfIn PDF document text
    • http://bonaparte-kerkrade.nl/fckeditor/ckfinder/userfiles/file/fimonikotuvagem.pdfIn PDF document text
    • https://culturasiapamplona.com/guiarte_userfiles/files/gigedekutarigokalupi.pdfIn PDF document text
    • http://csc025.com/userfiles/file/20210621141048_5jtn8f.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_off0000e415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE415 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fc27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC27 17080 bytes
SHA-256: 3715e80fbb7ee30048706fab0b65b7cba502e6502560de361f235a2658a92c5a
font_02_sfnt_off00012770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12770 10932 bytes
SHA-256: 6565c44a2a4a72bab66bc80d0f5ba36a2096bdc8d426816d7c389cdc00556e8e

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