Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f8303a5c810e667…

MALICIOUS

PDF

75.1 KB Created: 2021-03-21 22:23:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7b2b10ae0c535b29110ef3e969dfcabf SHA-1: e815b41aa9c0e9e694fc815ef32ad98a67fae5be SHA-256: 6f8303a5c810e667b2ea9a2935b41f8dbdae7fa50d815e81aa03394ba50de90a
74 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF document contains numerous external links, many pointing to disposable domains, suggesting a link farm or redirection scheme. The presence of a 'download' button lure and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading further content. While no scripts were explicitly extracted, the PDF structure and external links are indicative of a downloader or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://druttle.ru/wix?keyword=waiting+full+movie+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4488581/normal_6023f298b12cb.pdfIn PDF document text
    • http://gidonuvawugirid.medianewsonline.com/magic_tree_house_merlin_missions_books_1-25.pdfIn PDF document text
    • http://tozaworewinox.mywebcommunity.org/jawax.pdfIn PDF document text
    • http://kayikciakademi.com/26439581612skjuo.pdfIn PDF document text
    • http://leyloften.online/chemistry_class_11_ncert_2020cqtia.pdfIn PDF document text
    • http://presente-top.store/powapixopu8abpx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465691/normal_601965ebd5692.pdfIn PDF document text
    • https://roloruvibufezer.weebly.com/uploads/1/3/1/4/131410818/moxedunapatut.pdfIn PDF document text
    • https://pegepigav.weebly.com/uploads/1/3/4/4/134481067/5282208.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419626/normal_60086dc95dfdd.pdfIn PDF document text
    • http://lovupijuti.getenjoyment.net/alloying_elements.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454990/normal_5fe31f0ae4b47.pdfIn PDF document text
    • https://budamasut.weebly.com/uploads/1/3/4/9/134903336/3879806.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464313/normal_6003a79d4468e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e5b7f393-9b83-42c5-a877-5b85c0c772c8.filesusr.com/ugd/77b42d_2ecf7c19b11e43ceb0a7c4b50071a76a.pdf?index=trueIn PDF document text
    • http://novupomajanox.atwebpages.com/zudas.pdfIn PDF document text
    • https://35e1cc1d-5f6c-4a41-9b1b-b9ae8dddc97a.filesusr.com/ugd/351eee_05b9789fb92d440facc7a4a182fe8de7.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e91a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE91A 5120 bytes
SHA-256: 263216265f17dfdce8979db71024d9ac1c51a547c93d600e3fb191934eea18d5
font_01_sfnt_off0000fa9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA9E 10612 bytes
SHA-256: 7ff9618625ee25e83cbfdc7d9994e1bc280012c4486f633670e358a378b9b26c

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