Malicious PDF — malware analysis report

Static analysis result for SHA-256 4457a39ccd05fc4f…

MALICIOUS

PDF

390.2 KB Created: 2021-08-20 18:48:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-10
MD5: f6abba6c35fd60f3862659289740b2c2 SHA-1: e02784b723558fc74efe0c8ce2c8963e4b6cbea3 SHA-256: 4457a39ccd05fc4ff1a3a506a452ae5a01bedc8f29136bb1f111b377da56790d
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8992

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://oniceh.ru/uplcv?utm_term=c%C3%B3digo+de+processo+penal+militar PDF link annotation
    • http://anhbanglaw.com/userfiles/file/genarenugijalazavidataz.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a42297075a4---33025849759.pdfIn PDF document text
    • http://internationalbeautypageants.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/1190992119.pdfIn PDF document text
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/aa64a1e9782006935163727995e167aa/43094256047.pdfIn PDF document text
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c97a7fb894f---vizoriseni.pdfIn PDF document text
    • http://namngonviet.vn/user-/files/90386420957.pdfIn PDF document text
    • http://pantryscan.com/123cars/imagefck/file/jerinamijuwas.pdfIn PDF document text
    • http://skogsformedling.se/bilder_umeny/File/zisekezigenemizanegap.pdfIn PDF document text
    • https://iringmalaysia.com/ckfinder/userfiles/files/perapopiga.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/b12470f872b5373c5e92bbc1cdee4cc9/19754008064.pdfIn PDF document text
    • http://pensionpoint.cz/userfiles/files/58974841260.pdfIn PDF document text
    • http://vyveva.eu/UserFiles/File/21242477032.pdfIn PDF document text
    • http://jongauger.com/ckfinder/userfiles/files/sukowudegexaboga.pdfIn PDF document text
    • http://fd-health.com/upload/ckeditor/files/31870327439.pdfIn PDF document text
    • http://www.eurosecurimed.com/ckfinder/userfiles/files/5645934571.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/484e8f839a7210906d0f74126235772f/57193670859.pdfIn PDF document text
    • http://webdulich.com/js/ckfinder/userfiles/files/giridukujew.pdfIn PDF document text
    • http://greddy.com/admin/common/ckfinder/userfiles/File/65467507271.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160edb357c0be6---13755890653.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/27luk6o7oi7dgtb2kog6731a54/bagozolerapomixan.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/160711622b3a92---75237765765.pdfIn PDF document text
    • http://sinoscaform.com/upload/ckimg/files/202108050452513106.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/plm80ok882l8ujgurhg39u1ju5/32618189929.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160808b7f9f4de---zunikedujopadoweki.pdfIn PDF document text
    • http://letsbelegal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wixelufo.pdfIn PDF document text
    • https://alsterparkett.de/wp-content/plugins/super-forms/uploads/php/files/k0981um7g81n570mt5q80m5ri2/78053777481.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_off0005a9ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A9EC 11028 bytes
SHA-256: 3d33cf4a9cb7c486b9c5ae9f3f10f3e458b12402c2a98882d3264189a260adc7
font_01_sfnt_off0005c316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C316 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0005db28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB28 16880 bytes
SHA-256: f7e6b9f30922cc09ea062df13b2ae35c390977c2b436c1317c9d34106d9dba52