Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5b084a306058812…

MALICIOUS

PDF

81.1 KB Created: 2021-02-28 11:58:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 19294bcdee413d8e90d53cb0b31d2e85 SHA-1: 7e6baf85499061e2cbe5f871aa4eb889173b7c86 SHA-256: f5b084a3060588121d2b667729624e3b299cbfddee089c9936412916f402ed8a
66 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to external websites, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains text related to search queries, suggesting a lure to trick users into visiting these malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/123?utm_term=who+is+the+main+character+in+the+miller%2527s+tale PDF link annotation
    • https://temabodanifow.weebly.com/uploads/1/3/1/4/131454916/951596.pdfIn PDF document text
    • http://forkidsshop.online/25940640755p9elg.pdfIn PDF document text
    • http://jofifuneku.medianewsonline.com/hp_p2035n_printer_for_sale.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/farming_simulator_15_download_pc_windows_10.pdfIn PDF document text
    • http://tipografiyav.moscow/88357613238kb06j.pdfIn PDF document text
    • http://bidizujimon.getenjoyment.net/tirirafusejavesubokowutep.pdfIn PDF document text
    • http://plusstore.pro/vetezenitirilepifr9fy.pdfIn PDF document text
    • http://namedaun.fun/casio_g_shock_gw500a_watch_bandems20.pdfIn PDF document text
    • http://islemleriniz.org/epson_eb-x05_projector_specificationv8o1g.pdfIn PDF document text
    • http://pexawegowe.mywebcommunity.org/potukomadasani.pdfIn PDF document text
    • https://naxozafo.weebly.com/uploads/1/3/1/4/131483391/xotuzasexa_mobarukasu.pdfIn PDF document text
    • http://studytogether.fun/mspy_apk_free_crackedub1hr.pdfIn PDF document text
    • http://copyrightsupportforlnstagram.com/cause_and_effect_worksheets_and_answers3lnzp.pdfIn PDF document text
    • http://rivilidopu.medianewsonline.com/76503743622.pdfIn PDF document text
    • http://lnstagram-blue-badge-form.com/the_disaster_artist_trailer_deutsch8g28s.pdfIn PDF document text
    • http://kanshoper.site/zugibojyplnz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuxokoberibaw.atwebpages.com/32171795369.pdfIn PDF document text
    • http://gipebevu.atwebpages.com/how_to_reset_asus_router_factory_settings.pdfIn PDF document text
    • http://dowuvoduwitovos.atwebpages.com/crescendo_becca_fitzpatrick_ebook.pdfIn PDF document text
    • http://gipebevu.atwebpages.com/verbos_irregulares_en_ingles_en_pasado_simple_oraciones.pdfIn PDF document text
    • http://nokejufesuw.atwebpages.com/who_invented_basketball_in_1891.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_off0001019b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1019B 5088 bytes
SHA-256: cd33c4bf1033d55e38c7ab07e46cd5a7202a942c5df904132cda5b47e0d3c0e0
font_01_sfnt_off000112c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112C8 10440 bytes
SHA-256: 10d0e75376415e0f455716c7bad0cefb59ad38b626abd0558363d5c7ec68bfac

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