Malicious PDF — malware analysis report

Static analysis result for SHA-256 af278e8b0c60aca9…

MALICIOUS

PDF

80.0 KB Created: 2021-10-23 01:51:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 029ad109965aa59231261032115b1f02 SHA-1: ccef5b0ff1ae6c57ee0ba7b42e5a9d58d57f0f36 SHA-256: af278e8b0c60aca9f67bd79cedcb120da2facc1b97bca7840d26cfd300693fec
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137db552806b---485415552.pdf In PDF document text
    • http://adas-muko.pl/photo/file/jitiwam.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/dd604e69cf0e38b8155ae7be178fc9ca/48199603600.pdfIn PDF document text
    • http://geombiagioschettino.eu/userfiles/files/95715405485.pdfIn PDF document text
    • http://tincorner.vn/uploads/files/wojeriwetegepewaga.pdfIn PDF document text
    • http://fbrasil.com/userfiles/file///jezejevotitoju.pdfIn PDF document text
    • http://sintellect.ru/Repository/file/51179110016.pdfIn PDF document text
    • http://csc-vietnam.vn/uploads/userfiles/file/23900107210.pdfIn PDF document text
    • https://heureka-cz.eu/files/jurufedaxojimolonefojabas.pdfIn PDF document text
    • https://www.temtechnologies.fr/ckfinder/userfiles/files/medite.pdfIn PDF document text
    • http://shipsupply.ru/userfiles/files/fogidekagiba.pdfIn PDF document text
    • http://royal-pizza.eu/files/file/refodowevexalivonuviguji.pdfIn PDF document text
    • https://zifu-tech.com/app/webroot/userfiles/files/jabetug.pdfIn PDF document text
    • https://weishinclinic.com/uploads/files/202110110145333117.pdfIn PDF document text
    • https://swiz.eu/files/editor/88581677549.pdfIn PDF document text
    • https://vico-real-estate.com/ckfinder/userfiles/files/13911290892.pdfIn PDF document text
    • https://ceylinpin.com/calisma2/files/uploads/48210907628.pdfIn PDF document text
    • http://espwireless.net/uploads/file/74116678721.pdfIn PDF document text
    • http://ottuk-e.org/userData/board/file/85283624993.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/44c22a3f731b41c921fca6fdff28e2f9/venukumera.pdfIn PDF document text
    • http://landonintergroup.com/ckfinder/userfiles/files/22617983599.pdfIn PDF document text
    • https://o-dance.com/upload/files/vemivo.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/50ac38ca73c2d34fb7750e2d158605c7/fetukuzatepel.pdfIn PDF document text
    • http://bon-mar.com/fck_user_files/file/bibumowuzurejubezazu.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/KGDyd8lM0uI/uplcv?utm_term=how+do+you+get+your+eyesight+betterPDF 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_off0000d806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD806 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF018 16356 bytes
SHA-256: 1f4cb3a4a26845dca0127bb8ea330b2a4498f715843f9c4d15264697a5a3b070
font_02_sfnt_off00011a40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A40 10648 bytes
SHA-256: 4392692b4c442897adbfa70431abd0151f07625ad47579b689c5e090a8066340