Malicious PDF — malware analysis report

Static analysis result for SHA-256 03169f659c1b5c62…

MALICIOUS

PDF

85.5 KB Created: 2021-06-27 19:48:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: f7cbf17d91dfa74eee37814d71e40c79 SHA-1: 5da35584d3964e86e71561171846b024bc75d9f9 SHA-256: 03169f659c1b5c62d7cde70a8c464a8272e2bf04d463bfb4bd053599853756b4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document 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 phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, potentially leveraging embedded JavaScript for redirection or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://chcial.ru/uplcv?utm_term=brave+browser+for+android+tv PDF link annotation
    • https://travelstore.tn/userfiles/file/23147021237.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d8359346f---46076846316.pdfIn PDF document text
    • http://carrasvilla.es/uploads/files/36427762967.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160af791a85a67---darune.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16087eb7711511---gopewelufejaxetibujetur.pdfIn PDF document text
    • http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/160863946efb76---widotidujinuwubitabeka.pdfIn PDF document text
    • http://se-ty.ru/uploads/userfiles/file/77474499718.pdfIn PDF document text
    • http://adaviestransportltd.com/userfiles/file/83909123297.pdfIn PDF document text
    • https://sogelec-eng.com/files/ckfinder/files/vaxededuvutulatonewot.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/46d6872858bde3ced1e392e04ca5160c/30810848514.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/16090a1e7465d2---19556839330.pdfIn PDF document text
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/635e98a983e59f1eb6308f292d9be0ab/nulokazidozivilekitotini.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b66872837e9---moligufokup.pdfIn PDF document text
    • https://abugfreemind.com/userfiles/file/zowefatasederesenanap.pdfIn PDF document text
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081bd4f3a582---34660065573.pdfIn PDF document text
    • http://lauraestetica.com/userfiles/files/9677315276.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160b5ace76a016---mofut.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cb3ae847a76---gixejujabotojibuxewasu.pdfIn PDF document text
    • http://rauvuonsach.com/images/uploads/files/motemin.pdfIn PDF document text
    • http://4bx.pl/public/file/tanigerot.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/40fe3bde745ab9b75313b0bb97e6026d/sifozifiri.pdfIn PDF document text
    • https://serwisnawigacji.pl/userfiles/file/37091936694.pdfIn PDF document text
    • https://tecnibat.net/uploads/archivos/wisekipunafexofa.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/6187b28be0a97e9ffd39373ba9ccc993/nabeda.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608d27789b959---67884957477.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_off0000eaa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA0 17816 bytes
SHA-256: 7490aa90bc70f8b770b9fced999784f5afe62e2e6945841dc80c186e720232f3
font_01_sfnt_off0001182a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1182A 10648 bytes
SHA-256: 168d5d92d7ed3ffdde6292ab5c0a6bb4f01a594b1c5bdb3b5192a299dacd601c
font_02_sfnt_off000130ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130CA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1