Malicious PDF — malware analysis report

Static analysis result for SHA-256 df944c75674fa517…

MALICIOUS

PDF

87.5 KB Created: 2021-05-12 06:23:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d286ae02561a89c054e090d7e54fe464 SHA-1: e0669b4f081a2cdceb0fc855cbc5836fb47c9b05 SHA-256: df944c75674fa517d52aadc6e4f58c3200ed2b9d49bbaae64e4e98aac78c4e3e
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, indicative of a link farm. The document body, though partially corrupted, suggests a lure related to adjusting to new glasses. The presence of PDF_SEO_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM heuristics, along with ClamAV detection as Pdf.Phishing.Trojan, strongly suggests a phishing or malicious redirection scheme. No scripts were extracted, but the overall structure points to a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://vilenefex.ru/strik?utm_term=how+to+get+used+to+a+new+pair+of+glasses PDF link annotation
    • https://kezofufilulo.weebly.com/uploads/1/3/4/4/134488682/detekop-nozot-zifaromiso-fijepamurazeji.pdfIn PDF document text
    • https://zoseduzarososu.weebly.com/uploads/1/3/2/7/132740870/fa5c7ac7e.pdfIn PDF document text
    • https://cdn.sqhk.co/xavipinav/egiidwo/jefavafipofitokivisoweb.pdfIn PDF document text
    • https://zoredufuno.weebly.com/uploads/1/3/4/6/134638801/tuwak-mijowatamil.pdfIn PDF document text
    • https://zovipimisog.weebly.com/uploads/1/3/1/1/131163747/fukoweripujif.pdfIn PDF document text
    • https://cdn.sqhk.co/welosezu/bJFhcjd/what_was_the_russian_civil_war.pdfIn PDF document text
    • https://jelebemurufipo.weebly.com/uploads/1/3/4/4/134442628/dipez.pdfIn PDF document text
    • https://miwidikanizi.weebly.com/uploads/1/3/4/0/134016908/699541.pdfIn PDF document text
    • https://wamogipoko.weebly.com/uploads/1/3/0/7/130739383/9533358.pdfIn PDF document text
    • https://cdn.sqhk.co/mejeteboxav/jjj6ige/wapizotozabe.pdfIn PDF document text
    • http://luwinilulurop.mywebcommunity.org/antiepileptic_drugs_in_pediatrics.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/WCxyjhQ/tonad.pdfIn PDF document text
    • https://jizufuvarax.weebly.com/uploads/1/3/1/1/131164460/vogijomo-vokamifowexif-lidov-lesowamijib.pdfIn PDF document text
    • https://jipoditilab.weebly.com/uploads/1/3/1/4/131407274/e3547d11.pdfIn PDF document text
    • https://mologikonazo.weebly.com/uploads/1/3/4/7/134706863/3290910.pdfIn PDF document text
    • https://tadilagene.weebly.com/uploads/1/3/1/3/131381422/28188.pdfIn PDF document text
    • https://cdn.sqhk.co/mekurapiw/fPja1gc/is_bomb_tower_good_clash_royale.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://koxolavomuzo.myartsonline.com/how_to_cite_a_poem_in_an_anthology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a15d740-494e-4d52-bbe8-974b7f99c06d/47654320813.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/343f294b-cd0b-42fb-97a1-3854fac91f85/html_language_book_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f1e4d62-d677-4bf5-a91c-96c51a6d5340/13286461882.pdfIn PDF document text
    • http://sajulugebimisu.myartsonline.com/lexus_rx_350_for_sale_by_owner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/106e6995-f3cd-4c59-9deb-5a0fc70362b9/how_do_you_make_money_on_youtube_or_instagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c066636-2143-46f8-b8a3-fa90b82ef560/how_to_find_pilot_light_on_gas_fireplace.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000116f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F1 5260 bytes
SHA-256: 92bebfa34cf8093c32498bf951385ab4203f3390290541a6ef1936a3d5d8ef58
font_01_sfnt_off000128fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128FC 11448 bytes
SHA-256: 100a0342bac8c33e1f6c758fa0ebd60c12a77adb788191f181ca18b52218a831