Malicious PDF — malware analysis report

Static analysis result for SHA-256 64dc24498354ecd6…

MALICIOUS

PDF

76.4 KB Created: 2021-03-19 11:36:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e6dc580aa6c91d7f814a6863893e6a2a SHA-1: 75fd2a3d058367570659b4bf5576cbd45a1b0ba3 SHA-256: 64dc24498354ecd6119277a8ee55a9bb5c7797fbc252172d1e1aa33a6123f7ce
66 Risk Score

Malware Insights

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

The ML classifier and PDF heuristics strongly indicate malicious intent. The document contains numerous embedded URLs pointing to external domains, suggesting it acts as a lure to redirect users to potentially malicious websites. The presence of 'wkhtmltopdf' in the document body suggests it may have been generated by a tool used for creating fake documents or phishing pages.

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://lozipotod.ru/award?keyword=south+africa+tourist+map+pdf PDF link annotation
    • https://cdn.sqhk.co/fosuzonarefi/giWhfib/97824701492.pdfIn PDF document text
    • http://milesnires.xyz/86699284151nxlq0.pdfIn PDF document text
    • http://mmeueue.space/englisch_indirekte_rede_bungen_mit_lsungengsi6q.pdfIn PDF document text
    • http://koxelovanalimu.getenjoyment.net/wamazojoninalinude.pdfIn PDF document text
    • http://beststudent.space/godojorupoxuwaviz74ivv.pdfIn PDF document text
    • https://cdn.sqhk.co/xudogafu/he2N4hj/bright_beginnings_soy_pediatric_drink_nutrition_information.pdfIn PDF document text
    • http://prod-fruit.space/xivobev0pbv.pdfIn PDF document text
    • http://onenature.space/pac_1218-_16_max_liftt5kn6.pdfIn PDF document text
    • https://cdn.sqhk.co/lapefuxolu/hhif6ED/shark_attack_wild_simulator_2019.pdfIn PDF document text
    • http://iciko.xyz/marantz_sr5008_receiverc7ecy.pdfIn PDF document text
    • https://cdn.sqhk.co/guxudakakali/fghjbgj/barber_shops_houston_heights.pdfIn PDF document text
    • http://naturagrush.space/57116461727cwad6.pdfIn PDF document text
    • https://cdn.sqhk.co/posukomokufi/ihgd0hb/suzuki_vitara_android_auto_update_australia.pdfIn PDF document text
    • http://vexezujuzas.scienceontheweb.net/pamidronate_package_insert.pdfIn PDF document text
    • http://axecheat5.xyz/78865620150z26l8.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/faxaxos/vajudixonevazopewilupuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/logo_quiz_uk_answers_level_2.pdfIn PDF document text
    • https://ea7788ad-ef5a-48b5-911d-3ad522045378.filesusr.com/ugd/f3bfbb_363bf49855c74810b2a7df8213d1a302.pdf?index=trueIn PDF document text
    • https://57eba762-b826-4879-8d7a-7f480aba2934.filesusr.com/ugd/e89c2b_3d0e99527ded4b7f90a896b47eca80ff.pdf?index=trueIn PDF document text
    • https://ca6b24e6-01cd-4368-a310-1df05077a315.filesusr.com/ugd/11b39a_b5351522b4ef48a58907bbdc48695ee3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/faguwedukibovek.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/52097547701.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_off0000ec12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC12 5464 bytes
SHA-256: 3e3d24d85168af63efc9aa0e717496b3ecd9748b43a8e8de435c996fdc562324
font_01_sfnt_off0000fe83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE83 10880 bytes
SHA-256: 78e27547d39749e27261e5837a64d953d437b2fce14e116297ae4a1b42bea0ff

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