Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a7e90e446c4201e…

MALICIOUS

PDF

192.3 KB Created: 2021-06-28 04:11:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 445abacffc7f4d4299d3763dc8e6ad9f SHA-1: e2036fe377ed099d5534dfc53509734b459b1e65 SHA-256: 2a7e90e446c4201eb13e6a4dbc61da10e1d619b248a24b335664c72ccc689409
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to compromised WordPress upload storage and other disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to deliver second-stage payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9687

Heuristics 7

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d784f199eff---18849333974.pdf In PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/b10000a1d7cc7e058a7befe88533e401/jorovuku.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bd57a3bcf32---89530697330.pdfIn PDF document text
    • http://berbun.com/user_img/file/67952325258.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076b61408afd---98116956845.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160afc85eabce8---lasotoru.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/5b0d37bb12ed12869cadf7dd36365986/rabolelekawoxejixigu.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8f8f89d528---kifoda.pdfIn PDF document text
    • https://szaniterplaza.hu/ckfinder/userfiles/files/fowina.pdfIn PDF document text
    • http://classtool.info/upload/files/xuvejuxes.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/160d543c7740d1---11767005047.pdfIn PDF document text
    • https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/d8c0fb64f8ff057dd0bd052cda042b9c/zinoxukexazofuruw.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160928997a4772---42412079586.pdfIn PDF document text
    • http://artistalexanderkanevskyroyalshakespeareglobetheatrelondon.com/clientMedia/file/37580669340.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/jecrg41a5b2egj79uqjpqmo2u6/jozamupivo.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7f2175680a---71520607406.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/a318f989b08bf80d7f5bf8a6c447c9cb/83095271321.pdfIn PDF document text
    • https://www.westcountrystoves.co.uk/wp-content/plugins/super-forms/uploads/php/files/de85d9c56a445b64aa1c692b96d12fb4/97493106838.pdfIn PDF document text
    • http://alphabodysupplements.com/newerac2c/userfiles/file/96459436485.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160932fddab522---9698324765.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/ghfhdsmo6hjih07792aj3k0rlk/sodilikawonekewo.pdfIn PDF document text
    • http://globaltruthmediagroup.com/clients/a/aa/aa8380eac451876ae6ab993bf3a720d6/File/44476444217.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dacefe799c---68717403737.pdfIn PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/h2jtcrqg4991htvkdbrqu65ime/46544860108.pdfIn PDF document text
    • http://sonet.vn/uploads/images/files/senosex.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/icmi2je8lgdnst7k3bu95oubl1/91948366778.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=anatomical+guide+to+lovecraftian+horrors+pdfPDF 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_off00028e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28E1E 19356 bytes
SHA-256: e4e0bcb291ade872f5fff78cb84d8213b3b24cbb1ed607117a12f27c4cc81231
font_01_sfnt_off0002bf4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF4F 11212 bytes
SHA-256: 59fedb7d49974c7744ebe0a7a7c70bb24a4fd008bfe4dee35aafb3738b84fbe2
font_02_sfnt_off0002d93f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D93F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1