Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc785dfbb7f4d03…

MALICIOUS

PDF

90.5 KB Created: 2021-08-12 23:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: f7dd25e69b475f709706cabc78395f86 SHA-1: 89120e8d63b225228c34721e1ad95ee556416020 SHA-256: 1dc785dfbb7f4d036d0080cd7973aa5c25e341154a9dc72e5a80f28cca434035
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/7j3mea0227lpiskmfmtul1dnl6/81704201466.pdf In PDF document text
    • https://ienter.bg/files/91728944780.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/101617306659.pdfIn PDF document text
    • https://markeishahall.com/wp-content/plugins/super-forms/uploads/php/files/2e4ae8340d6ae0206487a820e14013d2/71398274766.pdfIn PDF document text
    • http://cuatudongsaigon.vn/uploads/files/35602536513.pdfIn PDF document text
    • http://bilmatbasim.com/userfiles/file/kiwefodupofeganidezu.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f157207c62c---widozis.pdfIn PDF document text
    • http://johnlillylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kagofogujalofuw.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3e6d083b7f---7077370550.pdfIn PDF document text
    • http://eca.or.th/ckfinder/userfiles/files/85411273566.pdfIn PDF document text
    • http://prestinoequitacion.com/imagenes/upload/files/60793032670.pdfIn PDF document text
    • http://abnicum.com/files/file/bapebologutirebowuzilix.pdfIn PDF document text
    • http://taniaandjohn.com/clients/874109/File/37264840254.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16092fd3a4ef39---sagekobifekolugoxaj.pdfIn PDF document text
    • http://plnjl.com/userfiles/files/77071657658.pdfIn PDF document text
    • http://lu67.com/clients/50962/File/85179241999.pdfIn PDF document text
    • http://flirtproducties.nl/ckfinder/userfiles/files/wedalijanusevewokemubaz.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610fb604a404a---5766633012.pdfIn PDF document text
    • http://daonshop.com/files/fckeditor/file/18058301406.pdfIn PDF document text
    • http://xn--h1acbpobggs.xn--p1ai/data/files/getoromonuzapobina.pdfIn PDF document text
    • http://mackielaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/53492400198.pdfIn PDF document text
    • http://leinerpakgelatine.com/survey/userfiles/files/22402591251.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/fba692e0d17566a16c0c38bf7055a68d/mipofujiwuradu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=how+do+i+fix+the+printhead+on+my+hp+officejet+6700PDF 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_off0000fb27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB27 17328 bytes
SHA-256: fa661f61b9f83608856cce85ad5645112e80b84e67dd265fdf38aebe573b7058
font_01_sfnt_off000127eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127EB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14002 11432 bytes
SHA-256: a2efbbdba02d70412b5f8f1328597c3ab7d4e9db497defe9389e4ec84b08d091