Malicious PDF — malware analysis report

Static analysis result for SHA-256 86a0e27f837d9a06…

MALICIOUS

PDF

178.8 KB Created: 2021-04-04 11:06:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7213939a5b4e025ebb87d5e9882af94c SHA-1: 50309558b0f4f1dba81b100ae43ff448e7001264 SHA-256: 86a0e27f837d9a0650fefce277209da45a71e305cc2c0b2c108be535bad91a5e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous external URIs pointing to disposable domains and link farms, suggesting a phishing or SEO poisoning campaign. The presence of embedded URLs and the nature of the heuristics strongly suggest this document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/wix?keyword=amazon.com+wikipedia+indonesia PDF link annotation
    • http://lagegisujego.iblogger.org/world_countries_and_capitals_in_tamil.pdfIn PDF document text
    • http://agent-spv.space/unnatural_causes_documentary_citation5q5zj.pdfIn PDF document text
    • http://remontnatali.ru/knot_tying_for_surf_fishing9y80e.pdfIn PDF document text
    • http://rolopigabetitu.scienceontheweb.net/wordly_wise_3000_book_5_answer_key_free.pdfIn PDF document text
    • http://cmbclientes.com/91359045013ium1p.pdfIn PDF document text
    • http://jogixokixese.iblogger.org/fidawemu.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/91195602365.pdfIn PDF document text
    • http://zijukikov.mypressonline.com/www._converter_to_word_online.pdfIn PDF document text
    • http://salonop.xyz/short_introduction_about_yourself_templates53f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461245/normal_602705f7d558d.pdfIn PDF document text
    • http://cosmosqrab.online/45816944111oynjg.pdfIn PDF document text
    • http://stingeksoj.online/3357558791t9qpa.pdfIn PDF document text
    • http://xijonope.iblogger.org/como_hacer_un_plan_de_marketing_para_mi_empresa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393893/normal_5fee8fd583048.pdfIn PDF document text
    • http://nosotedidapozal.22web.org/where_to_take_seashells_links_awakening.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jofikuv.atwebpages.com/duxofafowepona.pdfIn PDF document text
    • http://bebovufuvuji.myartsonline.com/59014439453.pdfIn PDF document text
    • http://refewededuxita.epizy.com/52095832005.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00026807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26807 5320 bytes
SHA-256: 49871355c19de7f2278561337709f8d354b1e4b62fc49a8187185ccefe1d2d67
font_01_sfnt_off00027a2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27A2E 13888 bytes
SHA-256: 33ddf3e97a4a3667531ba5cf14ab8b7030bcaaa6372e72956c4e28ade22dd734
font_02_sfnt_off0002a824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A824 16164 bytes
SHA-256: ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1

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