Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5ded24040ccc343…

MALICIOUS

PDF

91.0 KB Created: 2021-10-06 10:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: a215046f5528a3b882f7b93e45247902 SHA-1: 03502cecdb7a94b4fe37008a3368472831a40997 SHA-256: c5ded24040ccc343c51e6579a76168daf8048ebb730dd2b3eef5e177fed159f2
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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://drafthe.ru/uplcv?utm_term=healthy+bmi+for+56+year+old+woman PDF link annotation
    • https://gbp.dropship-online.com/userfiles/files/92879530724.pdfIn PDF document text
    • http://studioriboldi.eu/userfiles/files/tujimuzovowuvegurigeru.pdfIn PDF document text
    • https://chung-pei.com/userfiles/file/zozimukanubebebaromege.pdfIn PDF document text
    • http://psychanalyste-gard.fr/ckfinder/userfiles/files/wuxarudin.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/9c43363ed861c30d37ff1ab9174b02ba/lugopefipuno.pdfIn PDF document text
    • https://weborder.cloud/userfiles/file///48034836987.pdfIn PDF document text
    • https://loyallcanada.net/editor_files/file/riwafarinekidufoniwezi.pdfIn PDF document text
    • https://hophamthaibinh.com/upload/files/44311188762.pdfIn PDF document text
    • http://thebankcardservices.com/uploads/files/vozovidekizudalipar.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161568bd3cf5e4---saxubajaxaxi.pdfIn PDF document text
    • http://rescue119.org/userfiles/file/98214503234.pdfIn PDF document text
    • http://j1medical.com/uploaded/file/toromaxig.pdfIn PDF document text
    • http://omegapizza.net/uploads/files/98217783162.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/8ed7413d853cdfdd94e5ae963c4bb61d/repugewufa.pdfIn PDF document text
    • https://medius.sk/userfiles/file/8879267021.pdfIn PDF document text
    • https://www.savininkai.lt/ckfinder/userfiles/files/roxubotemesa.pdfIn PDF document text
    • http://metallpress.info/files/46363144850.pdfIn PDF document text
    • http://knipia.com/userfiles/file/sowidirotumikojedola.pdfIn PDF document text
    • http://freetourscadiz.com/ckfinder/userfiles/files/kuvewomeran.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161312708272f1---1552863418.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1614d2094be6f2---95908149641.pdfIn PDF document text
    • http://dpsszczytno.pl/photo/file/sifilul.pdfIn PDF document text
    • http://toonesk.com/upload/8795056491.pdfIn PDF document text
    • http://issaproject.com/app/views/panel/ckfinder/userfiles/files/fulek.pdfIn PDF document text
    • http://cheliabinsk.realxenon.ru/uploads/files/33012790647.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_off0000f753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF753 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010f6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F6A 11084 bytes
SHA-256: f3259bdb47d40f917057e538c95a5067cd5a1f1187b1b0e418b64de665d79fa9
font_02_sfnt_off00012917.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12917 20408 bytes
SHA-256: 91b4708950b41b14afa0b98fdfe9684b57718ad7ba507fc8200795dec0d6d37f