Malicious PDF — malware analysis report

Static analysis result for SHA-256 e25d44e66bd05256…

MALICIOUS

PDF

86.7 KB Created: 2021-06-26 01:42:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 064bdd9b8dad8eaae80e1d05af165d55 SHA-1: 207aba054c1db8ac37219db1da4a90115badfca2 SHA-256: e25d44e66bd0525634bb66188c2a70141e0917adb565d8d3e35b43477febb34d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to host malicious content or redirect to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crewmak.ru/uplcv?utm_term=corn+plant+toxic+to+dogs PDF link annotation
    • http://coumert.com/images/file/zodetabitorovunufaveveva.pdfIn PDF document text
    • http://longvu.vn/Images_upload/files/vipapefibajapo.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607942dd84309---zitometojunisumopudebavu.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607525611df93---75935838992.pdfIn PDF document text
    • http://dynamic1984.com/user_file/file/kuguma.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8585a27dea---vobasovefilob.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160875f183b15e---lumezipogelisogisere.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/h8m31tijt03pntt6uft5grl5m4/lovibakowurexoxufu.pdfIn PDF document text
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16082f62a44381---lidebafuwe.pdfIn PDF document text
    • http://winso.tw/userfiles/file/xejutekoburijuzuregu.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/97372450241.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608645008bbd2---16123372640.pdfIn PDF document text
    • http://bronia.org/userfiles/file/92700715807.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d051920d3ea---kunab.pdfIn PDF document text
    • http://thaoduocquyhiem.com/userfiles/image/file/418122383.pdfIn PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/j7o8jq0mjuldiv5e4fcqpugaa6/21198288690.pdfIn PDF document text
    • http://school19-zav.ru/userfiles/file/fegibosuxaga.pdfIn PDF document text
    • http://bright-mineral.com/uploadfile/file/2021061105454222.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1aef966f4---34914008643.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/313f8fbbf94c5a7c51ff175807918568/20989736691.pdfIn PDF document text
    • http://harissarantis.com/userfiles/files/41271663882.pdfIn PDF document text
    • http://omni-links.com/images/blog//file/loturosetaxo.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/ro1eqnnjf80s2gui8haqm5i7er/wilitur.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/5qnp57i1t1h5g1jprispf0d9q5/52633357104.pdfIn PDF document text
    • http://www.urbanwaterways.info/files/jarenudukipizu.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_off0000f0f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F7 10692 bytes
SHA-256: ce98ef783f4ba30841afbf06e25d7e79c02509b71545db570e78fcc9fa00058d
font_01_sfnt_off0001096b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1096B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001217d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1217D 16960 bytes
SHA-256: 9f62492e699e006a2305fbf0e6dc057f505a55cd59b3c4e5a94af4a5daed6927

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