Malicious PDF — malware analysis report

Static analysis result for SHA-256 84c8cb6a51f37f44…

MALICIOUS

PDF

77.1 KB Created: 2021-03-07 18:07:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 85749e9c78fff00bf7ea90aeb8f42dd3 SHA-1: 867e81a2821300658cad82b78fcd2dbe68bcbc1f SHA-256: 84c8cb6a51f37f44cd0a6342b13b946a57173c0ac99302a8046841ab2781f962
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded URLs and is flagged as a link farm on disposable hosting, indicating a malicious intent to redirect users to potentially harmful sites. The ML classifier strongly suggests maliciousness, and the presence of external URIs points towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://mezovuduw.ru/award?keyword=the+art+of+self+mastery+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370286/normal_5fcc3ee36bc13.pdfIn PDF document text
    • http://duxolaw.22web.org/3d_anatomy_atlas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459929/normal_603d540c01175.pdfIn PDF document text
    • https://cdn.sqhk.co/gisepavuv/cge4Rgh/mojipiseko.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450440/normal_5fc6f6938dfed.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/ufeCsjg/hallmark_channel_when_calls_the_heart_season_6.pdfIn PDF document text
    • http://fadotavo.22web.org/nifubavomazitubadedusi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374359/normal_6002c144150e7.pdfIn PDF document text
    • http://febisulel.22web.org/levag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/sumofisu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95417990-274d-494b-89ef-9c0c9bdc516c/can_i_change_my_name_on_my_marriage_license.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/21402400113.pdfIn PDF document text
    • http://xipijokezi.rf.gd/49124226223.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b20ea79-c829-4c2e-89ee-e77c530e1fbc/how_much_does_a_covid_compliance_officer_make.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b89af71-ea30-4ab1-aac2-4b5cb26744ad/top_10_strongest_pirates_in_one_piece.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/wozusezowakuwojexomemivab.pdfIn PDF document text
    • http://goxosabewap.rf.gd/14398452332.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2546b598-501b-4645-b4a0-357c49ec7efd/ancient_world_history_essay_topics.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/9522460860.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62092297-a0e8-42a9-aac4-92f6f4cb8c66/what_is_an_rslogix_5000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c813ae67-57b8-446e-90b8-a8180f036bbf/kovebizexiravozixif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9532e05a-2120-4af7-b564-a550cdc24764/vomawifarifuzasizop.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_off0000f1ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1ED 5332 bytes
SHA-256: 15705eecede8fe6d9e1c26b3a6f35906719276645e246f3f471d6f5759e58a5e
font_01_sfnt_off000103ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103ED 10184 bytes
SHA-256: a027fd1c94eac4358720328a6f25f20909fdf9e3be3d11f8161ff2fe4a7db8c0

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