Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5c675a3a02c9e06…

MALICIOUS

PDF

83.5 KB Created: 2021-03-28 18:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 156eb6265f0d3187e48d31f8a14c1f19 SHA-1: 9345f7b46da3c6972de7c288006bd3e292504845 SHA-256: a5c675a3a02c9e06632a2a3ab8cbbf3edc76188e1ef3de2644724654aa77457d
76 Risk Score

Malware Insights

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

The PDF contains a heuristic indicating it's an SEO redirector link, disguised as a search result for laptop reviews. The primary malicious URL identified is https://fokemale.ru/strik. This suggests a phishing or malware distribution attempt, leveraging a common lure to entice clicks. No scripts were extracted, but the PDF structure and embedded URIs point towards a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://fokemale.ru/strik?utm_term=is+acer+aspire+one+a+good+laptop PDF link annotation
    • https://cdn.sqhk.co/rolidofajug/iggric1/impossible_track_sky_bike_stunts_3d.pdfIn PDF document text
    • http://pevewoxoxup.scienceontheweb.net/tsc_appraisal_form_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/zezetemirag/ZmhhG5j/ximokiropelereve.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwasokeg/iaMjedN/microsoft_365_enterprise_administrator_expert_salary.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwoxegolewa/thjqVhi/space_flight_simulator_game_online.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/aiahdhj/uefa_champions_league_match_results_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/zojixemem/dChdVGS/xukasitebesowadiligepoki.pdfIn PDF document text
    • http://zawopim.mygamesonline.org/derozokosigunegif.pdfIn PDF document text
    • https://cdn.sqhk.co/nilofixogezu/qyjhBjb/danmaku_unlimited_2_apk_full_version.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/how_long_does_it_take_to_get_a_driving_test_appointment.pdfIn PDF document text
    • https://cdn.sqhk.co/laruxibut/Tia3Ogi/61315809443.pdfIn PDF document text
    • https://cdn.sqhk.co/lixabanitav/Jjamzjf/60051812186.pdfIn PDF document text
    • https://cdn.sqhk.co/fiduzosi/bjcgjPS/dreamed_about_my_ex_every_night.pdfIn PDF document text
    • http://majexifavel.scienceontheweb.net/pipoz.pdfIn PDF document text
    • http://lizuzezusad.medianewsonline.com/8519358906.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/tanikanaw/factoring_quadratics_a_math-_drills._com_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/how_to_get_chicken_hawk_gta_5.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/62686344555.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/networking_all_in_one_for_dummies_6th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/google_sheets_column_width_too_small.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/77680814209.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/morningstar_direct.pdfIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/ruxowarukulepejawavo.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/eliminating_sentence_fragments_practice_worksheet.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_off00010764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10764 5180 bytes
SHA-256: 841c8f871a9741a11f8d6ef86b26bbd5440ff46d238dd48dd9bcb89b02151597
font_01_sfnt_off00011910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11910 10868 bytes
SHA-256: 0e1a99ec9b67a878b7c575962a865586346c5f134b1bf39d4dd0f483814ee865

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