Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dcf3e410e2c12c…

MALICIOUS

PDF

83.1 KB Created: 2021-09-10 13:59:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: e6c6c88fdf25500019390c83293d91d1 SHA-1: 96c75a5ad9632eca0358e92cb6113fb6e1647dca SHA-256: c5dcf3e410e2c12cf13545268e850cee755e56c7ef565bcfd73e2e4e37b09937
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains embedded JavaScript and numerous links, many of which point to compromised WordPress uploads and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded JavaScript and the nature of the links suggest an attempt to exploit vulnerabilities or trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 8

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://inwebjor.ru/uplcv?utm_term=how+to+turn+off+real+time+text+on+android PDF link annotation
    • http://www.travelwithtaangoo.com/img/file/bawozizulufi.pdfIn PDF document text
    • https://cairparavel.ro/app/webroot/files/userfiles/files/rugoketazulir.pdfIn PDF document text
    • http://runnersavezzano.it/public/userfiles/file/luzakujewibizu.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/u8sqtn2lksmrvgpnnhkn7l5isb/45481392895.pdfIn PDF document text
    • http://itnetworkconsultingsf.com/helpdesk/app/webroot/img/userfiles/files/32570490494.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613888eb176d8---wujeweniwisogakije.pdfIn PDF document text
    • http://studioscoponi.eu/userfiles/files/85197802664.pdfIn PDF document text
    • https://seeyounow.net/userfiles/file/70456651983.pdfIn PDF document text
    • http://zs-oilfieldequip.ru/d/files/bikogudorakavosan.pdfIn PDF document text
    • http://chapaconoticias.com/assets/ckfinder/core/connector/php/uploads/files/wamejegaw.pdfIn PDF document text
    • http://kozhencherrymtc.org/userfiles/file/31578793985.pdfIn PDF document text
    • http://didaconcept.com/admin/fckeditor/file/87200889455.pdfIn PDF document text
    • http://viacaosaopedro.com/www/js/ckfinder/userfiles/files/digavukurelej.pdfIn PDF document text
    • http://evpltravel.com/xv_image/file/gojapufefivabilaxomej.pdfIn PDF document text
    • http://fygl.net/uploads/file/05012644142.pdfIn PDF document text
    • http://soupworld.de/upload/file/77802058961.pdfIn PDF document text
    • https://vibangthuaphatlai.net/uploads/files/93797970566.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137a4eddb40c---begojenalipamewuzokugopi.pdfIn PDF document text
    • https://emilline.dk/ckfinder/userfiles/files/rabonofipumuleve.pdfIn PDF document text
    • https://ambulatorioveterinariosismondi.eu/file/rarejerefuzoxokamofa.pdfIn PDF document text
    • http://innotack.com/userfiles/files/38811021652.pdfIn PDF document text
    • http://www.uc-kushiro.net/images/library/File/50048579753.pdfIn PDF document text
    • http://kd-council.com/upfile/files/sezumek.pdfIn PDF document text
    • http://metallpress.info/files/46531011617.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_off0000db8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB8C 19368 bytes
SHA-256: 5504f7a5a091e6850dee5a7aaacafc34aa6de64cca947a385ebca473fbefef3b
font_01_sfnt_off00010e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E72 10624 bytes
SHA-256: e567f00dc85a786f8c55e49ed9c326a201e8470ffd71edebb5a15db74496566e
font_02_sfnt_off000126b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126B9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.