Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a7d5058600be893…

MALICIOUS

PDF

74.8 KB Created: 2021-01-26 23:58:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 4aa3a6c0aa18a903d4f9e650590934d9 SHA-1: f745f199ddf07630ac3be603a88f1fca36b090b0 SHA-256: 6a7d5058600be893386d6fcf0e48a4182808120b5c9678bab59a8ac4e525bc62
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan-like behavior. It contains numerous embedded URLs, with one prominent URL pointing to a site that appears to be a link farm designed to redirect users to potentially malicious content. The document body, though heavily obfuscated, suggests a lure related to 'Unit 1 ecology study guide answers', aiming to trick users into visiting the linked sites.

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://jacksth.ru/123?utm_term=unit+1+ecology+study+guide+answers PDF link annotation
    • https://cdn.sqhk.co/vuwonesi/QiicFWB/86108172673.pdfIn PDF document text
    • http://quickstore.pro/51911698818i58z9.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/ahiGWjg/90471563864.pdfIn PDF document text
    • https://cdn.sqhk.co/fomezawelud/rViemgh/moto_g_power_wireless_charging_case.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/jgTCmji/dunkin_donuts_near_me_now_menu.pdfIn PDF document text
    • https://kexexetipo.weebly.com/uploads/1/3/4/8/134897314/17fd24d.pdfIn PDF document text
    • https://xogiwudib.weebly.com/uploads/1/3/4/7/134715522/tokutedogiri-fozanur-nozupowejod.pdfIn PDF document text
    • http://winoorama.site/68918857858pnpnj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pidukuniwid.epizy.com/losing_my_mind_sondheim_sheet_music_free.pdfIn PDF document text
    • http://vufagozujidivu.epizy.com/bowevamaxaz.pdfIn PDF document text
    • http://vizawog.epizy.com/default_worksheet_and_workbook_settings_excel.pdfIn PDF document text
    • http://xusixuxoribixe.rf.gd/teteva.pdfIn PDF document text
    • http://magajavopisili.epizy.com/disefimuwano.pdfIn PDF document text
    • http://wivoruremuwun.rf.gd/ragnarok_mobile_alchemist_job_guide.pdfIn PDF document text
    • http://lomurobutu.epizy.com/jepit.pdfIn PDF document text
    • http://nisinukodepafix.rf.gd/35312441998.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_off0000e60f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE60F 5344 bytes
SHA-256: eea3a40a49bafe1f4046314ec5b385f2f3194962eb519d2ccbdb2e0dd84da1e9
font_01_sfnt_off0000f867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF867 11072 bytes
SHA-256: 72e152f19a8ac87509917b7420fa83ad8f3d8c2435a8530cfd72d42696395cf9

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