Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ec6a4013780438d…

MALICIOUS

PDF

75.1 KB Created: 2021-02-09 04:50:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 84d44c2a07d0c12cecc79bae99c637ca SHA-1: af09ae1ef10b97e4336e05932965261786d22154 SHA-256: 8ec6a4013780438d6ed017486771ca4850985e3fe6a4fc1334e03df3119c9818
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically pointing to 'maypoin.ru' and a query parameter suggesting a router reset lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links on disposable hosting, reinforcing the phishing or malware distribution intent. ClamAV detection as 'Pdf.Phishing.Trojan' further confirms the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/123?utm_term=reset+belkin+router+extender PDF link annotation
    • https://zokelafeg.weebly.com/uploads/1/3/4/8/134889419/pulujigebiwepuf.pdfIn PDF document text
    • http://metazexepajesen.22web.org/gnar_guide_s9.pdfIn PDF document text
    • http://jodopafipunew.22web.org/93959499784.pdfIn PDF document text
    • https://towipikegogu.weebly.com/uploads/1/3/4/6/134690187/7944134.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481520/normal_6009ce66c73ab.pdfIn PDF document text
    • http://xudogiborijum.66ghz.com/kivogizujegom.pdfIn PDF document text
    • https://fuxarudoniw.weebly.com/uploads/1/3/5/3/135350341/potapub.pdfIn PDF document text
    • https://tudaluvakagovax.weebly.com/uploads/1/3/4/6/134614365/wajotovuvidusakow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423166/normal_5fe58ac8b07f7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ketened.rf.gd/12546482452.pdfIn PDF document text
    • http://fonimegalidoxu.epizy.com/annabelle_2_movie_hd.pdfIn PDF document text
    • http://madulok.epizy.com/28313179410.pdfIn PDF document text
    • http://zuvaxazalafes.epizy.com/21075015804.pdfIn PDF document text
    • http://gipumupanaw.rf.gd/piano_sheet_music_easy_popular_songs_free.pdfIn PDF document text
    • http://dawiwafawuz.epizy.com/gifag.pdfIn PDF document text
    • http://surotatifezuxe.rf.gd/atheros_driver_installation_program_windows_10.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_off0000ea02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA02 4888 bytes
SHA-256: 6f6da2036698b9761cc9471733e34a46aca59efc11b19a0618178b21cba6703f
font_01_sfnt_off0000fab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB7 10868 bytes
SHA-256: e4e2ddb21d2c5d33ca6df46a1afd346b1705336933854caec0248b4e4e7909ed

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