Malicious PDF — malware analysis report

Static analysis result for SHA-256 30db60376e2dbe80…

MALICIOUS

PDF

91.1 KB Created: 2021-07-16 02:44:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 1cd0ff20e96d28714b9c57dd1d57c2a7 SHA-1: 21883f7b3e87d43240cf84efe488fa672824d208 SHA-256: 30db60376e2dbe80e231ec1ec5d6fb4fde7b0d3b659d94e0aa89de4096a76f61
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS uploads or are hosted on disposable domains, suggesting a link farm designed for SEO manipulation or to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious intent to redirect users to potentially harmful sites.

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 http://ffarchitettura.it/userfiles/files/padetakisonabokafiro.pdf In PDF document text
    • http://ahcxdq.com/uploads/file/280357344556.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081bf9f2b6c5---13075502112.pdfIn PDF document text
    • https://bkht.vn/userfiles/file/43942546171.pdfIn PDF document text
    • https://giriconsultancy.com/content_files/files/labusofapinezanafajix.pdfIn PDF document text
    • http://veiligheidssloten.nl/ckfinder/userfiles/files/5991025528.pdfIn PDF document text
    • http://bukharasuwanee.com/sites/default/files/file/18116968198.pdfIn PDF document text
    • http://itkaufmann.com/images/fckimages/file/bapilozikugi.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/32cd16dfed745dcc22b7e415eb0ebad8/77135138928.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c300ee3ac0f---36349133940.pdfIn PDF document text
    • https://bawwabatrizq.com/userfiles/file/fegafitinizip.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f7fa3de40a---vogolu.pdfIn PDF document text
    • http://studioprogettoarchitettura.eu/userfiles/files/22986770718.pdfIn PDF document text
    • http://atomleasing.ru/media/File/nuserozirijazigitijumefij.pdfIn PDF document text
    • http://volamtuyetthe.com/userfiles/file/rupexudeziwaganu.pdfIn PDF document text
    • https://manenshop.com/upload/files/64947580833.pdfIn PDF document text
    • http://bluekeydigital.com/images/pic/file/foxifexitu.pdfIn PDF document text
    • http://isvpro.com/custom/files/josakasavekalujoziruwikim.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160781b1c78f92---xebofimafuru.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160701c6bd5d49---60668239154.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160924a00d6059---bofatajixumomitan.pdfIn PDF document text
    • http://sarljarry.fr/userfiles/file/kaxelopivitofabidobaw.pdfIn PDF document text
    • https://lamaisonducoeur.ca/upload/editor/file/85829642455.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=places+to+eat+at+night+near+mePDF 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_off00010091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10091 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000118a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118A3 17956 bytes
SHA-256: 4f5edc42bef7011ec512a695ba0b7bd99677e0b315bc9ec344772c885b00898c
font_02_sfnt_off00014703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14703 10680 bytes
SHA-256: f7edd1f307a37beff41a8ec24ec6558e75bca247bf2b830a5c31691c4bdfd395

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