Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac0d0c9db567868e…

MALICIOUS

PDF

84.8 KB Created: 2021-06-29 00:12:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e52ced0855a13f25f244a5fbe83a95b1 SHA-1: ea02e0aa7d97a26518e1b106ca4d9aad11c6326e SHA-256: ac0d0c9db567868ee0d0ecf482ababa2ad61f520c544bc0fc63af24778009707
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous links, many pointing to compromised WordPress sites hosting other PDF files. This suggests a link farm designed to distribute malicious content or lead users to phishing sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a37fde649a5---gevosujolusemubolezax.pdf In PDF document text
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/6266d8107c1139568aff8c8ac49fc3df/redefovetubewasobevefor.pdfIn PDF document text
    • https://lamaisonducoeur.ca/upload/editor/file/18151925884.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/16087c53f033bb---pivufotapigoberu.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a312bc6dc4d---jibumipu.pdfIn PDF document text
    • http://eastmoorclassof1970.com/clients/4/43/4343e427eb1b0a0668350338a4d6b623/File/90297503059.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/sh9igqa1ffr5sk9se6g2561fr7/vazatofase.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/48424415447.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608c0d01cd06c---mezogerofisisir.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/8c385037218902691c2adf5511c67b1f/96792674118.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/0e277ed3c78fce85402682c705a76aa7/48624709198.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/680fc38d5143b806a92fda746ca05a2a/52672816524.pdfIn PDF document text
    • https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/79d05e1459d6818c617f7404207c5c0e/xexoxikavif.pdfIn PDF document text
    • http://sakaryakasaplarodasi.org/userfiles/file/zarizugifap.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/e1ce1d9e9a5b9b9a3bcbfa1c98081de1/88732970757.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/kvocin469he441u7ee2n7moo3c/51096869745.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/9daae4bf142a6b69a2776a9183a6f617/2407246951.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080e73723209---90355555904.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/56460648779f4e193a489a449f5ec588/52565894405.pdfIn PDF document text
    • http://teresachild.com/upload/files/lomizuxerufefubavaji.pdfIn PDF document text
    • https://beauti-full.ru/uploads/files/19017900066.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ccb0c483037---19602060103.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+to+get+all+karts+in+mario+kart+wiiPDF 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_off0000e95a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95A 10620 bytes
SHA-256: 0a424f5132f8e12686444febed1a6b99b46a370b34618d1989e5c6a48f761926
font_01_sfnt_off000101a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A1 17040 bytes
SHA-256: 70c80540391ce7d5f89cdf2ace606a0f7b8a32bab919317e91f03486d8ef3347
font_02_sfnt_off00012dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DFF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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