Malicious PDF — malware analysis report

Static analysis result for SHA-256 d82644361f73edc3…

MALICIOUS

PDF

75.8 KB Created: 2021-02-15 21:26:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 76fb12162aae2ec849dc9d9d2aef86bd SHA-1: 20f801fcdd825e5749bf47efe27bd7f03ac9fe60 SHA-256: d82644361f73edc38e92f981f6cc26c7eba338ff95af93d30cc7e520febbe81f
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains multiple embedded URLs, with a high-confidence ML classifier flagging it as malicious. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, suggesting an attempt to obscure malicious destinations. The primary URL, 'https://maypoin.ru/wix?keyword=gold+nugget+surplus', is likely the intended destination for user interaction, potentially leading to phishing or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://maypoin.ru/wix?keyword=gold+nugget+surplus PDF link annotation
    • https://jigadukux.weebly.com/uploads/1/3/4/6/134682377/3b4382aa8be1.pdfIn PDF document text
    • http://doporujela.iblogger.org/chuck_chicken_power_up_all_transformation.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408595/normal_5fed698c1dd81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449424/normal_5fe7ffbb39548.pdfIn PDF document text
    • http://lozajakar.iblogger.org/vibunoxividelitoxurukos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381751/normal_602207c542c16.pdfIn PDF document text
    • http://rebelojujiraw.iblogger.org/33217533572.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ziwufuv.rf.gd/chapter_5_infection_control_test_answers.pdfIn PDF document text
    • http://jonegukum.epizy.com/overtime_request_forms.pdfIn PDF document text
    • http://jaxirelogalitis.epizy.com/88057360285.pdfIn PDF document text
    • http://nuxumejaxumem.epizy.com/employment_registration_form.pdfIn PDF document text
    • http://rumalitufe.rf.gd/baixar_jogos_para_celular_android_gratis.pdfIn PDF document text
    • http://vetarobafawuk.epizy.com/bodybuilding_photos_hd_free.pdfIn PDF document text
    • http://zitosorav.rf.gd/harrison_lake_bc_fishing_report.pdfIn PDF document text
    • http://mixexomamag.rf.gd/barbie_fashion_games_free.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A5 4948 bytes
SHA-256: f850eb3892dd0d67a950fabd63a21435d17bdbb7499a27d376bb9a719fb5d23b
font_01_sfnt_off0000f491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF491 14596 bytes
SHA-256: 45c4ad832966c641ee5814a6e7356e9caf880b33c8a32b6a655300839a68d150

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