Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2d046013e34e2d7…

MALICIOUS

PDF

96.9 KB Created: 2021-07-08 05:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a5217d060e75487f39c29203028be89c SHA-1: ee469ca996fd719f5f14237a52e3037e28110686 SHA-256: b2d046013e34e2d7b714611b77ba36da74b0acc0695b039c9b056b3c31f58eed
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains a link farm pointing to numerous compromised WordPress sites, likely serving as a lure for phishing or malware distribution. While no scripts were directly extracted, the structure and URL patterns suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b40178edd54---xuwuzoliga.pdf In PDF document text
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1642ba2b19---68762064020.pdfIn PDF document text
    • http://vistobrasil.net/uploads/file/54912129549.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/qahc1fpkebafu18j79c5umv2pq/9988736611.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/9e8ookqtrtt72ai72kchmo1528/setukivita.pdfIn PDF document text
    • http://hoanggiaphatstone.com/upload/files/gajozubesonodaxoxosi.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/efa50acf2ab3b169a84ce3b6c8db0901/lisoluzi.pdfIn PDF document text
    • https://kimtuong.vn/isc/public/files/fckupload/file/25740483013.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/16085fa3cecd93---10914927882.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/v53rg5ndc0nas090bpss1c8rd2/32576206482.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/53061cb54c6e3493e8fd394ed6ff9cdb/sezulovo.pdfIn PDF document text
    • http://grafiport.com/userfiles/file/vatugin.pdfIn PDF document text
    • https://gachbinhduong.com/upload/file/punekanurafilivubuwur.pdfIn PDF document text
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/1dfe9c262f770c2ed1b4bc9f436e5896/gogitijojupamasuwi.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/km57b2br479sjid1raqvgmjd44/gusevezipizuxusetu.pdfIn PDF document text
    • https://cncostruzioni.com/userfiles/file/79581710338.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160df0d0acec99---nagini.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/47f9362f99942fcf22ccb704ccdd3780/gagalunib.pdfIn PDF document text
    • http://megalaserasia.com/upload///55622872394.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608064eb26407---91744667604.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/t4oph0jq9nks5hvv7iis8sjjs0/fokekesajemadoziduv.pdfIn PDF document text
    • http://coimbra.hu/uploads/ckfinder/userfiles/files/jeminowodisel.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16074813e55026---gewobirinunevexe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=what+is+an+indicative+verbPDF 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_off00010cbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CBE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000124d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124D0 23900 bytes
SHA-256: e89b6b596a05a8c41628fec6092e3a3a4257607542fdcbc0df365e5b1839cb12
font_02_sfnt_off00015e7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E7A 10500 bytes
SHA-256: a6ec7871ae6ec3ca6303ba364f56e842d74db125810a67fb2405a9097e75e682

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