Malicious PDF — malware analysis report

Static analysis result for SHA-256 846decea9e736ae1…

MALICIOUS

PDF

65.9 KB Created: 2021-05-05 10:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6fc6095058587cdde2c517c3ae84ca54 SHA-1: 7f86ffcec4b2f5426f55b146037dbe1fd4533a26 SHA-256: 846decea9e736ae1400682848fdbe2fd5b5f94f399886706949311624f0c7452
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with a primary suspicious URL pointing to 'midufefew.ru'. The document's structure and the presence of multiple links suggest it is a link farm designed to redirect users to malicious content, likely for phishing or malware distribution.

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://midufefew.ru/strik?utm_term=bissell+powerlifter+pet+brush+not+spinning PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4374954/normal_5fc7f557108fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491445/normal_605bcad2bc6f8.pdfIn PDF document text
    • https://bifugojatomawak.weebly.com/uploads/1/3/1/4/131437093/nifegifuze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447874/normal_5fdcea8acb059.pdfIn PDF document text
    • http://tasenatalagotur.22web.org/management_of_beneficial_insects.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407747/normal_600a8815a3dc5.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/hjahfVC/fiwotixutiko.pdfIn PDF document text
    • https://cdn.sqhk.co/bopibege/CikjfBk/lamad.pdfIn PDF document text
    • http://vujukotigenali.22web.org/90160046991.pdfIn PDF document text
    • https://fobuxowomi.weebly.com/uploads/1/3/4/2/134235628/wivebas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454977/normal_60668e7a6901a.pdfIn PDF document text
    • https://bikigevoxepasi.weebly.com/uploads/1/3/4/7/134716722/degipomabopibuxuwir.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/ihIaAjc/bible_study_worksheets_for_adults.pdfIn PDF document text
    • https://wunaramalus.weebly.com/uploads/1/3/4/5/134576193/dudoxa-nijezoje.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sudatidi.epizy.com/kidazexuriwajanugos.pdfIn PDF document text
    • http://lorofamatunex.rf.gd/que_es_inflorescencia.pdfIn PDF document text
    • http://disiroto.epizy.com/jam_plus_wireless_speaker_connect.pdfIn PDF document text
    • http://vofegut.epizy.com/pagafi.pdfIn PDF document text
    • http://jusolasoxo.epizy.com/zipivagexemokanirogu.pdfIn PDF document text
    • http://lozunina.epizy.com/jurnal_aritmatika_sosial.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC718 5232 bytes
SHA-256: 5cc18afca35bc2cc72fa361cfd109df2428a64beebbf41e877a1a9b7a2e6a6ad
font_01_sfnt_off0000d8f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F7 9752 bytes
SHA-256: 99be399a9f5d20531585a7dbfa7c26ac675dafa50fe15fad69fb987259d0b502

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