Malicious PDF — malware analysis report

Static analysis result for SHA-256 25b1f8f8faf5f5cc…

MALICIOUS

PDF

70.4 KB Created: 2021-04-05 19:01:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8782acc54650df5bfc3450147cbc9a82 SHA-1: 96e98d0c4566c1c32827a4df12875d1250c8b3e6 SHA-256: 25b1f8f8faf5f5cc46ce61fa5c834440930a77a56a6f02a7e7165806c0a68863
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ClamAV as a phishing trojan. The ML classifier also strongly indicates maliciousness. The presence of external URIs and the link farm heuristic suggest an attempt to redirect the user to malicious content, likely for phishing or malware delivery.

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://pelibifir.ru/wix?keyword=cedar+and+stone+urban+table+menu PDF link annotation
    • http://giveaway2020.info/super_dancer_chapter_3_ka_winner_nametj5ok.pdfIn PDF document text
    • https://ruwaxejitoxa.weebly.com/uploads/1/3/4/9/134902813/fovuwesawudata.pdfIn PDF document text
    • http://homeolimp.com/dias_feriados_para_el_18_de_septiembre_2019mhbar.pdfIn PDF document text
    • https://cdn.sqhk.co/mepofazobi/YmXQfnx/vipevamopagepejomukuk.pdfIn PDF document text
    • https://cdn.sqhk.co/fusojafiza/hbi9gf7/kuxam.pdfIn PDF document text
    • https://melejorun.weebly.com/uploads/1/3/0/7/130775242/numumulemobe.pdfIn PDF document text
    • http://nejevefivi.mypressonline.com/79727604487.pdfIn PDF document text
    • http://jafoxidulez.mypressonline.com/describing_trends_vocabulary.pdfIn PDF document text
    • http://jebonefawudo.sportsontheweb.net/susarowuvokarodez.pdfIn PDF document text
    • http://roboludawu.mywebcommunity.org/b._ed_cet_syllabus_in_marathi.pdfIn PDF document text
    • http://lazategomid.scienceontheweb.net/26695695720.pdfIn PDF document text
    • https://detubutil.weebly.com/uploads/1/3/5/3/135348338/zitogodi.pdfIn PDF document text
    • http://vewefoma.getenjoyment.net/69228129548.pdfIn PDF document text
    • https://bamewubi.weebly.com/uploads/1/3/2/3/132303354/5eb3eeff1232.pdfIn PDF document text
    • http://vzruvayarttraff.xyz/ketitobasokijoruwonesuxorl5zen.pdfIn PDF document text
    • http://deliwubavamir.mypressonline.com/15186533381.pdfIn PDF document text
    • http://esclick.pro/99117965908c1cln.pdfIn PDF document text
    • http://sasegotib.medianewsonline.com/backfire_a_collection_of_caribbean_short_stories.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gegilifopom.myartsonline.com/coordinate_geometry_ebook_free_download.pdfIn PDF document text
    • http://lipabarud.atwebpages.com/27923684705.pdfIn PDF document text
    • http://valupakukav.myartsonline.com/broncho_vaxom_sache_bula.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_off0000d693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD693 5016 bytes
SHA-256: e0bf727355611c2b2bcc52eecf50a137c4ff5fe6e583842424a2bd68246677e0
font_01_sfnt_off0000e781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE781 10968 bytes
SHA-256: 83538ab5dc5047a32edff7fb3a1548a31d9f8dfe7b3723387ff9ac78eac72c75

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