Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bc863cab41ed09…

MALICIOUS

PDF

90.6 KB Created: 2021-08-01 06:31:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: ef9980e561fe2b184e02fc7efabda802 SHA-1: 5ffe94b6f9f9f46ccac8f7ae375820e2fa5ee50a SHA-256: 72bc863cab41ed09c7e3518f6dc71194c34e6d46fa02b05d8561634089e40171
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9932

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.sehersirin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074db877d053---77599749234.pdf In PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc3b39460c3---75979153965.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b73f5721aeb---86443541541.pdfIn PDF document text
    • https://lawrenceyezersky.com/userfiles/file/fevazawikovowalilutir.pdfIn PDF document text
    • https://airbays.com/userfiles/file/varajikokekuko.pdfIn PDF document text
    • http://denis-lefebvre-services.com/fichiers/file/rejivapufikobemuvazog.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a972eebd702---direlezarimod.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/1c94594e3f77e86f64b010c072ae9837/najajewemenazotus.pdfIn PDF document text
    • http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607f70696abcf---11641232305.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/5a46b40003836b40253ebef9512ded8f/fogunekivadezarexujosog.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096e665b1f86---kofoboloduku.pdfIn PDF document text
    • http://ckrestaurantgroup.com/ckfinder/userfiles/files/jotadelibolupuvewo.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/11c59f993b45ef8de07e4667e9bcbb00/94683998742.pdfIn PDF document text
    • http://closehorses.com/userfiles/file/83634800058.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160805dbdb4433---73356021284.pdfIn PDF document text
    • http://circuitoinsulargc.com/documentos/file/48699759152.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/e06994b0b857ff22a3801b0fce35862e/rukijanexasaxikuzomamat.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa9bec82ac8---6288329076.pdfIn PDF document text
    • https://clinicamanila.com/ckfinder/userfiles/files/4474183652.pdfIn PDF document text
    • http://hcvitamin.com/webroot/img/files/4162813291.pdfIn PDF document text
    • https://ski-experience-japan.com/images/blog//file/xudekuf.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c87b07e73c9---30610614103.pdfIn PDF document text
    • http://campbellelectronics.com/uploads/toxifowisokemununamokoli.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=will+there+be+a+season+2+of+samurai+champlooPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEF 18156 bytes
SHA-256: 70d21bc9e02c389b7439b673d4b9fb1ffadef83e7b98b01f6ca8b24b3d19ba74
font_01_sfnt_off00011c59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C59 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13470 11100 bytes
SHA-256: 1cb6ba5f45a00c18e6c5ee84bba25b01afa3364a5bbfb5d61ade984c34b9e8ee
font_03_sfnt_off00014df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DF4 3060 bytes
SHA-256: 2ff0639fe26fbfa765e5eb041045584044d1a276da487ebb153177034778197c