Malicious PDF — malware analysis report

Static analysis result for SHA-256 8203d145ee406b0c…

MALICIOUS

PDF

85.8 KB Created: 2021-04-06 11:58:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1b19674ec574a043532fe11afba94e7c SHA-1: c15aa5d7a444e081c0030876c19069bdd8a4b04c SHA-256: 8203d145ee406b0cc92c1453c0d69b27d7e48a3165aef6b42b4ef920e21ce671
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, with one specifically pointing to a domain associated with phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to educational content to mask the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/award?keyword=compound+shapes+area+and+perimeter+worksheet+pdf PDF link annotation
    • https://litisenos.weebly.com/uploads/1/3/1/0/131071047/8175748.pdfIn PDF document text
    • http://guwaxata.iblogger.org/14787611981.pdfIn PDF document text
    • http://refoxipixob.iblogger.org/88632816179.pdfIn PDF document text
    • https://mojivuza.weebly.com/uploads/1/3/0/7/130775228/4cd0d363ef3eff.pdfIn PDF document text
    • http://xenalebosob.scienceontheweb.net/rpa_robotic_process_automation.pdfIn PDF document text
    • http://jebonefawudo.sportsontheweb.net/sujav.pdfIn PDF document text
    • https://wiguvebilef.weebly.com/uploads/1/3/5/3/135389097/7416983.pdfIn PDF document text
    • https://dixuxizexejo.weebly.com/uploads/1/3/0/7/130740209/mevogizij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487918/normal_5fc5c906e3b4f.pdfIn PDF document text
    • http://rixorevu.getenjoyment.net/madinah_arabic_reader_book_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470839/normal_60394a2e9c98a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wazinupizut.epizy.com/which_business_is_most_profitable_pakistan.pdfIn PDF document text
    • http://kurejewupom.rf.gd/15919994274.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4302652-f15e-4200-a836-5e2c919cce6d/management_information_systems_dsst_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/326704ec-62e8-449d-aec1-3b2ba26e9513/55641771640.pdfIn PDF document text
    • http://majuditatip.rf.gd/cea_form_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c73ca818-89ac-4559-9566-bffd572c1928/precalculus_6th_edition_pearson.pdfIn PDF document text
    • http://wozunajovufati.rf.gd/5112196799.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e57d650-9264-493e-9b3c-4658fc5715e7/overlord_light_novel_after_anime_season_3.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 2

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_off00010f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F18 5308 bytes
SHA-256: 8d5946df1f2ced293844db443221c0a55a497d5bd17d14b6988d5b5c04dffda3
font_01_sfnt_off00012107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12107 12020 bytes
SHA-256: 441390940ea516abebd5b87ee9c607f411fd9ff11fc26e18742e0f034e1b98b6

Open this report in the interactive analyzer, or submit your own file for analysis.