Malicious PDF — malware analysis report

Static analysis result for SHA-256 793c794077f3011d…

MALICIOUS

PDF

71.4 KB Created: 2021-10-03 01:06:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 62e8c7993a27c833dcc2e35a53a07eda SHA-1: 60d5a49938f1e80bc7e8d881a87faafea1b59f30 SHA-256: 793c794077f3011d204476df00c2c61630351731e99a84da64f7e69fdbc6207c
96 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 5

  • 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://esprimagroup.com/userfiles/file/79978861773.pdf In PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a04f74f4f9---24362973222.pdfIn PDF document text
    • http://nguoigiupviec99.com/webroot/img/files/41131595045.pdfIn PDF document text
    • http://rvhifi.cz/files/file/13881448612.pdfIn PDF document text
    • https://piataafacerilor.ro/app/webroot/files/userfiles/files/5967708882.pdfIn PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/7sh4jq9st3tplkbhe2ttjbrj7r/33600540845.pdfIn PDF document text
    • https://capital-publishing.com/ckfinder/userfiles/files/gekelat.pdfIn PDF document text
    • http://qamsar.org/userfiles/files/92635912369.pdfIn PDF document text
    • http://tiwtactic.com/userfiles/files/28296483819.pdfIn PDF document text
    • http://yuhenganquan.com/userfiles/file/20210930181739_1875819634.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615576654b29b---rakanowotijisu.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/161491e1b4f3c0---xaxitozifosiratu.pdfIn PDF document text
    • http://wimborst-ceramics.nl/ckeditor/ckfinder/userfiles/files/darot.pdfIn PDF document text
    • http://talleresjpg.es/img/file/95441630471.pdfIn PDF document text
    • http://willajarmar.pl/userfiles/file/94752242080.pdfIn PDF document text
    • http://wu-pao.com/upfiles/editor/files/86733940352.pdfIn PDF document text
    • http://jtylek.pl/Upload/file/vevunozodumup.pdfIn PDF document text
    • https://nirkongrp.com/ckfinder/userfiles/files/wepeju.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/2db0dc9abe6b6493695187e2ef0475ff/vetowenetavupimaxogunu.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/161386ab39f700---65134765877.pdfIn PDF document text
    • https://cuacuonbentre.com/upload/files/bejukowukumosivapepidus.pdfIn PDF document text
    • https://www.emcp-pmce.ca/_includes/ckfinder/userfiles/files/22962286855.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/7b841207f407e3489d43b06925fde1f2/gurigonuwivekosazugafa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=how+to+grow+long+hair+with+thick+hairPDF 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_off0000b632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB632 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ce49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE49 10376 bytes
SHA-256: 8b357740fea3698decabe297873b74839c2e49e844412bd9784d6cd11cbe3dfa
font_02_sfnt_off0000e5ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AB 16656 bytes
SHA-256: 9889698c0a608713d3a6d205674a7852840f6cdc98f8e4bd0721d75331b3490b

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