Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01fee2b65d8db8f…

MALICIOUS

PDF

80.9 KB Created: 2021-04-04 12:26:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5a11ae0775ad309f3f946202b91f2643 SHA-1: da1bb318394757c691677376cb638aa1b7c19938 SHA-256: b01fee2b65d8db8f9cc572672853c590001e79fdba19f3932796804642c10bed
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically advertising free streaming content to entice clicks. The ML classifier strongly indicates maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or redirection attempt, likely leveraging a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/wix?keyword=wonder+woman+4k+streaming+online+free In PDF document text
    • http://migasoloraluxuj.scienceontheweb.net/19306894447.pdfIn PDF document text
    • https://cdn.sqhk.co/rotusorukazi/gigjidc/algebra_1_worksheets_khan_academy.pdfIn PDF document text
    • https://cdn.sqhk.co/dojaxeje/pAghVhi/1st_year_english_moral_stories.pdfIn PDF document text
    • https://cdn.sqhk.co/kutajanode/ifggahc/bivib.pdfIn PDF document text
    • https://cdn.sqhk.co/gapobuzijiru/cV2gg3l/ding_dong_the_witch_is_dead.pdfIn PDF document text
    • https://cdn.sqhk.co/dejowipapoli/Iidhjge/chuchel_2_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/widafopaj/OXjYOjd/black_christmas_tree_collar.pdfIn PDF document text
    • https://cdn.sqhk.co/fusozuwalas/EU1yje9/beyblade_burst_rivals_mod_apk_unlimited_money_download.pdfIn PDF document text
    • https://cdn.sqhk.co/maxokekoxo/dhiksji/cello_scales_sheet_music.pdfIn PDF document text
    • http://beststudent.fun/libijewugevasudup1hixz.pdfIn PDF document text
    • http://kowojolajamuv.getenjoyment.net/62119300122.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/jsyhaje/877006143.pdfIn PDF document text
    • http://rofogukiluvupu.mygamesonline.org/31223496750.pdfIn PDF document text
    • https://cdn.sqhk.co/lojavowi/9jgbjh5/avast_antivirus_free_for_pc_offline.pdfIn PDF document text
    • http://accueilcmb.com/kerulisexenagaginesejilukvkq0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b23a55b-e9d7-4d07-84ac-21a26baeb8af/lozokiwufutetodugenune.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42b5c4c7-00d1-491e-8f6b-5d759d88d94c/vetimedexavoje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4288882-3bb7-4d87-8cab-300baee30e9c/sedofifudozogijufawokug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/761d9918-e0f8-42b9-87b9-66eb548ea6f1/how_to_use_barnett_crossbow_scope.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_off0000fef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF3 5484 bytes
SHA-256: b229ca2d2bb132832e16aaaa7ad30115b36da73b34f33c535f2347b9db50ab20
font_01_sfnt_off000111a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111A6 10816 bytes
SHA-256: 2c07a614eadd338feb539e989eeecd036ed94bb25e89e1dd249b66ee9fa3631f

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