Malicious PDF — malware analysis report

Static analysis result for SHA-256 f25b7f25cdd5740f…

MALICIOUS

PDF

87.8 KB Created: 2021-03-22 18:04:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ea52e8eac27a17734211b3de0aafbaa7 SHA-1: 88ff498c48c9e2b69061bf774e1b521f3d6ce340 SHA-256: f25b7f25cdd5740fef2dc83f5fd8036f4925025e157a1bb0c5c507a13a7841f0
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • 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 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://botokaw.ru/strik?utm_term=educational+psychology+examples PDF link annotation
    • http://gibelineg.sportsontheweb.net/english_file_beginner_third_edition_teacher_s_book.pdfIn PDF document text
    • http://fekedusotuxena.iblogger.org/nice_guidelines_for_cerebral_palsy.pdfIn PDF document text
    • https://nawixelufa.weebly.com/uploads/1/3/5/3/135317770/jiseronevim.pdfIn PDF document text
    • https://penomagara.weebly.com/uploads/1/3/2/6/132695387/nubajadusixaxawiwor.pdfIn PDF document text
    • https://womovenurobo.weebly.com/uploads/1/3/1/8/131872055/rimoduwiv.pdfIn PDF document text
    • https://muwikoli.weebly.com/uploads/1/3/2/7/132740525/49c829d.pdfIn PDF document text
    • http://sovuradema.medianewsonline.com/87631451851.pdfIn PDF document text
    • http://ligexekena.mywebcommunity.org/buferekidexatiw.pdfIn PDF document text
    • https://suguturame.weebly.com/uploads/1/3/1/4/131438741/bded757946de045.pdfIn PDF document text
    • http://pokinusuvato.getenjoyment.net/27482425929.pdfIn PDF document text
    • http://jusojixanona.getenjoyment.net/55208427318.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://46d16763-6c5f-4e19-aa2c-3f4071fcbec2.filesusr.com/ugd/26f730_313e5bc1d1f54a5ebb734817900eb623.pdf?index=trueIn PDF document text
    • https://307a23dc-bb60-4906-9a68-69e45957aa19.filesusr.com/ugd/d2057d_eeb39fbee8e44d4eb85ee765aebf2ca8.pdf?index=trueIn PDF document text
    • https://ff87c8b5-ca28-4ac0-94ba-218234037d87.filesusr.com/ugd/1d4e4f_75623b0e22114f2392fa9925ff51ef7f.pdf?index=trueIn PDF document text
    • https://f579be4a-c2ec-451d-94ee-532237c06880.filesusr.com/ugd/9f6a24_431678529b21473c97b484f0ca9fcd30.pdf?index=trueIn PDF document text
    • https://40785fcd-1e5e-4316-9306-5db1d5795eae.filesusr.com/ugd/2f07a1_ca9b806f14a14311908ed77c7b683e4b.pdf?index=trueIn PDF document text
    • https://6e37e838-c278-4d46-baa9-25b8497af200.filesusr.com/ugd/fbcb80_63c67aef77ba4b0e94b1bc4b23d11fcc.pdf?index=trueIn PDF document text
    • https://d6477b75-8e4d-4453-8bbc-a86a6009e57c.filesusr.com/ugd/261d41_bddd9696b5cf44a0889e081ef2fb9f2d.pdf?index=trueIn PDF document text
    • https://7fad2989-91b8-457c-89bc-9a0e7aeef19f.filesusr.com/ugd/b03ff3_7cb6d513fecc4b8cb729d0974ecba8cf.pdf?index=trueIn PDF document text
    • https://9de673a2-3b8e-40eb-bbf5-c0ad8e71a3da.filesusr.com/ugd/bd5c68_2d0ba086027840fc87eeaccf7f3e791a.pdf?index=trueIn PDF document text
    • http://rebokomixuxoj.epizy.com/windows_10_iso_file_free.pdfIn PDF document text
    • https://ff999131-262c-4f46-aa1e-84c50d3d9e43.filesusr.com/ugd/a474dd_3d0a0960a8d64d18b48de13f37dd05f7.pdf?index=trueIn PDF document text
    • https://af18ad75-7652-4b25-b9e0-8da5fded0af1.filesusr.com/ugd/529385_be8393409da34611abd0e1de8843ea29.pdf?index=trueIn PDF document text
    • https://69cf8a46-0d3d-4b71-8fd1-93df925da18e.filesusr.com/ugd/e4064d_ec8e3cf1437a429bb6b52e02f3cb67b4.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

Related samples 6

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_off00010b6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B6E 5400 bytes
SHA-256: 88593255fba03e3163b840f48be2e203cdd3cbaeb26931b104b9f9045d4932e0
font_01_sfnt_off00011dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DAB 10952 bytes
SHA-256: 3dad5f9c2aef9319beb41eb91777c2cc5884efc503820133209698b474d29cb2
font_02_sfnt_off000142ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142ED 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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