Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd1f8583eb825b9d…

MALICIOUS

PDF

83.6 KB Created: 2021-02-25 18:42:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 86b3a8cad3c76f5a397441a2f38740ef SHA-1: 80e3e6aeb623c464708409d2b642cf55ee354ffc SHA-256: dd1f8583eb825b9dee34efa68831877a8e99b556355bfce5268d128aa6f28e9f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or malware distribution campaign. The presence of external URIs and the 'link farm' heuristic strongly indicate an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/strik?utm_term=bmw+navigator+vi+mount+cradle PDF link annotation
    • https://cdn.sqhk.co/supetuzitepi/hbjhyjd/21686247827.pdfIn PDF document text
    • https://cdn.sqhk.co/dibidoretu/ieDutnU/50901040703.pdfIn PDF document text
    • http://jaralet.getenjoyment.net/26119154228.pdfIn PDF document text
    • http://wisecreditscore.info/46148706069exwr5.pdfIn PDF document text
    • https://rogupogadagome.weebly.com/uploads/1/3/1/3/131398605/fatufa-winini.pdfIn PDF document text
    • http://zodatowafe.getenjoyment.net/toro_push_mower_dealers_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/vuxijavapul/j1jcUbt/89598282870.pdfIn PDF document text
    • https://juwufugoxeza.weebly.com/uploads/1/3/4/5/134528381/a8e5d1b1e234083.pdfIn PDF document text
    • http://lebizifijafaxim.medianewsonline.com/de_que_se_trata_la_obra_cien_aos_de_soledad_resumen.pdfIn PDF document text
    • http://kismykeitio.best/xevix9wcgk.pdfIn PDF document text
    • https://bedaxeribijone.weebly.com/uploads/1/3/2/8/132814155/dugep.pdfIn PDF document text
    • http://kunujunekedi.mygamesonline.org/can_you_be_a_nutritionist_without_a_degree.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447270/normal_5fd68048af459.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370077/normal_6034da7f396a9.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/f3K3iao/34287965441.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385620/normal_5fda81179f836.pdfIn PDF document text
    • https://dawurawo.weebly.com/uploads/1/3/5/3/135323901/wisilasof_suzope.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://baguselewaz.epizy.com/niketakalafirarufabusuwuz.pdfIn PDF document text
    • http://tixumupugenatum.epizy.com/64603962422.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7D 8264 bytes
SHA-256: 7ef382a283df5b274488f71e91d6ab9b295556896e84ef95c681083c83736cf4
font_01_sfnt_off00010793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10793 5280 bytes
SHA-256: da5f7bf828912ba3d5b9f63d71ae30691516cde2ce748b85ad36b4096aadf0d9
font_02_sfnt_off00011987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11987 11484 bytes
SHA-256: 33d59a1d4f0c1d86d129b39ea779d82bb0c7dea6ab0a4a0a556ff55774a32bcc

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