Malicious PDF — malware analysis report

Static analysis result for SHA-256 425efc977fc167e9…

MALICIOUS

PDF

83.0 KB Created: 2021-10-05 11:57:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: b31efc38114e06a3bc063d335e432bf5 SHA-1: 75ece3108a0d4c84d79f2ff5d67b35dc81e1b29b SHA-256: 425efc977fc167e9e717f20dbfcbba58d6ae720f83fbf57cf7e677fd664b7c76
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://oniceh.ru/uplcv?utm_term=white+wooly+worm+meaning PDF link annotation
    • https://nikunjfoundation.org/ckfinder/userfiles/files/bokolopoxupeforosumepen.pdfIn PDF document text
    • http://pjteam.hu/uploads/14150371245.pdfIn PDF document text
    • http://fapannimario.it/userfiles/files/65119283191.pdfIn PDF document text
    • http://scuderieverdina.it/scuderia/userfiles/file/8322579338.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/popuzo.pdfIn PDF document text
    • http://abwplazaview.com/uploads/files/49823436593.pdfIn PDF document text
    • https://zlato-stribro-investice.com/upload/files/12504389020.pdfIn PDF document text
    • http://jandebruijn.com/uploadimages/files/15618887562.pdfIn PDF document text
    • http://e-sportis.com/images/upload/dotipetozulaxaduladumazak.pdfIn PDF document text
    • https://longislandinvestmentadvisors.com/nini/userfiles/file/sajelumuzubisujevu.pdfIn PDF document text
    • http://a2kat.ru/userfiles/file/voluluwidededokifitake.pdfIn PDF document text
    • http://sdes.in/uploads/33465921184.pdfIn PDF document text
    • http://sbsinternationalschool.org/userfiles/file/lefuponoxexilokukesawuw.pdfIn PDF document text
    • https://fiscalonline.ro/app/webroot/files/userfiles/files/35534486091.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/niqc23tl75j76dmjt05e9julh7/87291759887.pdfIn PDF document text
    • http://irinaburmistrova.ru/files/rejuzivosera.pdfIn PDF document text
    • http://xn-----elcksuhhemsi4e.xn--p1ai/files/files/rerakiwelawa.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161419ae50c8f6---31401713726.pdfIn PDF document text
    • https://pristineleather.com/userfiles/file/75096914021.pdfIn PDF document text
    • http://www.siphonicflowmandiri.com/upload/files/dosapiperilem.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/1612ea3c7be6e6---tufigakebubisezenafub.pdfIn PDF document text
    • http://alfamar.travelshops.pl/userfiles/file/78277432516.pdfIn PDF document text
    • http://carnavaldemarbella.com/Senegal_5/Content/files/userfiles/file/fijujeput.pdfIn PDF document text
    • http://picassogift.com/Uploadfiles/files/93481453879.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_off0000dde7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE7 10580 bytes
SHA-256: 73b261b6864ba19ed1fb5212e83d5e197c0a6c0d575225efa88fefbdf966328c
font_01_sfnt_off0000f5e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E7 18728 bytes
SHA-256: 1d75bfe04fc4a6218fd3ced5ebe9a62d7117005b9e8d2530fb3855e0bce1b12f
font_02_sfnt_off00012646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12646 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1