Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8ad2d2493a2182…

MALICIOUS

PDF

76.2 KB Created: 2021-10-08 23:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: d5f1423fc4d73b1a52d7105562b4c476 SHA-1: 5e56e8abd863001ab746e7fd096820d0cec0dceb SHA-256: 5d8ad2d2493a21822f8ff84d324f2cac08967aafdf17283a4dba3cc28c7fc7b7
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://crysiq.ru/uplcv?utm_term=the+attitude+is+everything+pdf PDF link annotation
    • https://dom4m.lv/userfiles/files/nojarajebinotaxekube.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614dfdbb0401a---gabuwaboz.pdfIn PDF document text
    • https://usssecuritate.ro/userfiles/file/xanapalofoperudovavatojaj.pdfIn PDF document text
    • https://speedwayinfo.hu/uploads/file/22765569676.pdfIn PDF document text
    • https://borgopitti.it/userfiles/file/23019853816.pdfIn PDF document text
    • https://5703n1n6999-6a55.com/contents/files/gotejuwosuweruwosodolud.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b1766a2c1b---famijulimu.pdfIn PDF document text
    • http://hoangnamjsc.com/upload/files/57932987802.pdfIn PDF document text
    • http://valdhans.cz/userfiles/file/76082378148.pdfIn PDF document text
    • http://ingfrimale.com/userfiles/files/7813831520.pdfIn PDF document text
    • http://markaz-e-durood.com/EditorImages/file/bupurixalugugex.pdfIn PDF document text
    • http://gfzgt.ch/upload/file/gagafifebewofenajelesaz.pdfIn PDF document text
    • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16156964ac6a6b---zesopopedababowi.pdfIn PDF document text
    • https://cungcapthitdetuoi.com/app/webroot/files/images/pages/files/84619373270.pdfIn PDF document text
    • http://design-klasse.de/ckfinder/userfiles/files/27365521549.pdfIn PDF document text
    • http://radtel-sport.pl/userfiles/file/zejudenapifuzokosumetafez.pdfIn PDF document text
    • http://saraya-shop.ru/upload/files/pupevugaxabin.pdfIn PDF document text
    • http://portamarioarchitetto.eu/userfiles/files/texawavibikebazud.pdfIn PDF document text
    • https://bodymason.com/user_uploads/files/xifoxonado.pdfIn PDF document text
    • http://etepi.pt/js/ckfinder/userfiles/files/18893025612.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-9-2/20210902200113822875.pdfIn PDF document text
    • http://studiopol.com/userfiles/files/jimelexipumenosafanibo.pdfIn PDF document text
    • https://matfreklam.com/calisma2/files/uploads/75740210872.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_off0000c6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E6 10856 bytes
SHA-256: 89b29889e70b468741bcbca01bcd81bfb0872626c50e95504224449a1c52fd1d
font_01_sfnt_off0000dfc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f7d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D5 17036 bytes
SHA-256: a3edfc70eb3c6294583db0dcad8868441a3103a1ede32a4ecaa2c4cbaacd9bc8