Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ea4a7b44784d712…

MALICIOUS

PDF

84.3 KB Created: 2021-03-30 17:57:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 26a94a4811d1914620ad0602b599ced4 SHA-1: d02ee1d5fff62faedc276d270e8fb1376c8e977a SHA-256: 8ea4a7b44784d71232b29df902abd4ec30334e4ce8e7162f2bf6be05abed9102
66 Risk Score
Tags
free-cdn-ebook-manual-lure

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 external URIs, with one pointing to 'kuzutuzo.ru', suggesting a phishing or malware distribution attempt. While no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

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://kuzutuzo.ru/strik?utm_term=can+you+get+old+movies+on+amazon+prime PDF link annotation
    • http://sakivometo.medianewsonline.com/bangla_bukhari_sharif_download.pdfIn PDF document text
    • https://cdn.sqhk.co/norowitidot/ggAibij/82600566660.pdfIn PDF document text
    • http://najetaxu.mygamesonline.org/pedibegimubazedatiwuwebu.pdfIn PDF document text
    • http://pusewuvi.medianewsonline.com/askep_bblr_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/wejawujagi/cidggZs/pba_tournament_bracket.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/math_anxiety_test.pdfIn PDF document text
    • http://tadurarawi.mypressonline.com/antrenmanlarla_matematik_1_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dilobowuz/dRjimcg/hollywood_action_movies_2020_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/PggcifM/yeet_meaning_cambridge_dictionary.pdfIn PDF document text
    • https://cdn.sqhk.co/ranofakon/Ogid92n/fiwipezixako.pdfIn PDF document text
    • http://bekokax.getenjoyment.net/pill_camera_ppt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/4d56757d-6581-4450-a436-187075cf4a17/ring_doorbell_plug_in_chime_not_working.pdfIn PDF document text
    • https://5c90cfa9-af55-48e2-9430-1f3580382729.filesusr.com/ugd/e2b09b_27177302bbb04b94865f56c254c9c479.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a5701e4-1b77-40ca-9068-faeb2b732cd4/how_to_activate_voice_control_on_xfinity_flex_remote.pdfIn PDF document text
    • https://ff743420-c5e2-4527-a456-70ddb2a1abd8.filesusr.com/ugd/5178f2_17d79c20b1e343bfbcbfd4d3aad9728a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/59aeb678-3176-45e0-a8f9-1c9db5bb2f34/33574162233.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbbec013-0c7c-4df5-87e0-587bc0613077/what_to_write_in_a_card_to_your_goddaughter.pdfIn PDF document text
    • https://0dea665b-aaaa-42f3-a52c-f86f0fd1efa2.filesusr.com/ugd/8b9728_d7b74c90b7394dd1a7c792ba7f9d032d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/85086c42-159b-4688-aeae-f692d7ed52e5/duduzokidekinal.pdfIn PDF document text
    • http://todidetiped.onlinewebshop.net/ocr_online_converter_to_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71fe1584-d1d6-4aa5-94ed-ba2bb86ffdc5/how_many_comics_does_deadpool_have.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE15 5396 bytes
SHA-256: 7f794656934b6f8c5882c035cc8c483d35110a6c31efd749ffb6bce49c6b0a11
font_01_sfnt_off00011077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11077 10736 bytes
SHA-256: 727a43fe8b237d60acbd7c12756bc58d58b70ca761968718ed2e2ea0c0f5506b
font_02_sfnt_off00013514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13514 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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