Malicious PDF — malware analysis report

Static analysis result for SHA-256 941fbbe076c28ab9…

MALICIOUS

PDF

73.8 KB Created: 2021-06-29 21:16:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: c1ae6e9209c5fcd340319f9d2d5eea6d SHA-1: c0743ae120f468eacbb30bfa6f81e55e03ee767a SHA-256: 941fbbe076c28ab9466c15f12b3e2d4aa52e5aa7f60d66504164f573b62fef29
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript, a common technique for executing malicious code within documents. The file also features a link farm pointing to multiple distinct hosts, many of which appear to be compromised WordPress sites, suggesting an attempt to obscure the final destination or distribute payloads. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/dcabb91c37c75b065bb9cd0b8d79f633/sazapet.pdf In PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b77ce4e3b42---tilemuxunalo.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16079404be9ba2---lexunaporusemepukaw.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b82dea34f4---24672084423.pdfIn PDF document text
    • http://xn--eyt274i.com/upload/files/97503612750.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab6e907f52e---lokenefunusatisenetelo.pdfIn PDF document text
    • http://motoren-adachi.com/js/upload/files/73569424265.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e043e266e4---25189796183.pdfIn PDF document text
    • https://maximatrimony.com/ckfinder/userfiles/files/6240625794.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/1609abd212c1f9---71011179614.pdfIn PDF document text
    • http://baschin-heizung.com/meineBilderAlbertGrundschule/file/dodetujuwexutifobivaduboj.pdfIn PDF document text
    • https://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/umhkpam7n373rrl9is0bnca47i/wenitaradewep.pdfIn PDF document text
    • https://zlatartopalovic.rs//files/momititexi.pdfIn PDF document text
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/aa1ge026hrkgfs9rfvimquvv54/73924800452.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/5d2478fa8b5da02db4033ef79862b44a/13271259696.pdfIn PDF document text
    • http://fitviewer.de/files/file/nazoxunanewapovetexud.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607e39e7410fd---47300006926.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c48e02953bb---punatixatinirofu.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa15aac041c---64252972820.pdfIn PDF document text
    • http://18554080.com/userfiles/file/fuwudiwegadakufobef.pdfIn PDF document text
    • http://lapenya.cat/imgjovesnaves/file/tujapek.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8f3b1b4b0---64616625470.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a1cb3336a25---xamaponefo.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609faad41d7d8---35882192672.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=how+to+draw+raven+fortnitePDF 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_off0000c01c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC01C 10276 bytes
SHA-256: c1d0eb774dd68aee79ebb5c992a02b081ffcaf693212b413f48d7a03a5057d31
font_01_sfnt_off0000d752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD752 16508 bytes
SHA-256: db89592fb4e1fb9966e065aa093e0d2b0c43402c9f92fa48c03686e9aafe6125
font_02_sfnt_off00010217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10217 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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