Malicious PDF — malware analysis report

Static analysis result for SHA-256 7821389e25eea906…

MALICIOUS

PDF

89.2 KB Created: 2021-09-07 00:00:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: 48ca2b5913e0431d76be188eb6fa90d4 SHA-1: 0422c460e9a9c964609853eabbcbe043ffc63385 SHA-256: 7821389e25eea90665c479e60b5d071c5ea060679771eebf96080ec63ed68c28
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • 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 http://twtipa.com/upfile/files/2021/08/23/sinamejujipadixalex.pdf In PDF document text
    • https://h1t-url12shio-turbo.com/contents//files/83260483571.pdfIn PDF document text
    • http://www.bluewhaleline.com/image/upload/File/56967238826.pdfIn PDF document text
    • http://delve-cr.com/uploads/78804010331.pdfIn PDF document text
    • https://cevhertemizlik.com/userfiles/files/zipatobe.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16083006c1dabd---45502523418.pdfIn PDF document text
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16074ca0aacc8c---3115222284.pdfIn PDF document text
    • http://aweibel.com/Photo/file/jusewapilixaxiji.pdfIn PDF document text
    • http://ladispensadicampagna.it/uploads/assets/file/36167918220.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/4c28ad2f3d7b44bd36ca531e943091f0/99987001310.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/88fbb39157af89f7a7a91b2d21a7b2d9/80276328563.pdfIn PDF document text
    • https://swagath.co/new/ckfinder/userfiles/files/rusow.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607402f336b05---wulezutomezali.pdfIn PDF document text
    • https://hotel-la-licorne.fr/userfiles/file/95199455241.pdfIn PDF document text
    • http://hindel-relax.ch/ckfinder/userfiles/files/maxasonufovimenalitamas.pdfIn PDF document text
    • http://healingtown.org/userData/board/file/66971157496.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/i80cv6loocjm859v5f7upqr72h/bigakiminegulodu.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/e7e8b3e7f9031b9e07d6fdf307e00f5e/tajut.pdfIn PDF document text
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/8640db2390b51f26150a1c40c926813f/65376243327.pdfIn PDF document text
    • http://phannhan.vn/files/usersfiles/files/82521202130.pdfIn PDF document text
    • https://angkorphotographyguide.com/userfiles/file/98697763370.pdfIn PDF document text
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608e0233ad283---wajusuzomelozodakikuzibu.pdfIn PDF document text
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/5a1aac74fef44b73b34968db7770f6f9/44006568040.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=human+values+and+professional+ethics+pdf+aktuPDF 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_off0000f1cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CF 19812 bytes
SHA-256: 5dab07ebdf73311e46b2b2291bc4433135bd4f801b96b5536a4805c2f3d31602
font_01_sfnt_off00012490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12490 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CA7 11132 bytes
SHA-256: 49dead38152f01f8da293771ec14acf17771ff24b1a76bb593df6ccb2c0d9192