Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e43080090033c3…

MALICIOUS

PDF

78.7 KB Created: 2021-03-27 22:01:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 6d4572ced44511d2155e7cb763c82da5 SHA-1: c411d6ab17a18f45ba81afdb4057eed892afeb2d SHA-256: d3e43080090033c3c27b95f975d3c1a09f1604a6e013bd340a6beaa1973fe61b
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting and exhibiting link farm characteristics, suggesting a phishing or malware distribution scheme. The presence of external URIs and the overall structure strongly suggest the document is designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/strik?utm_term=john+maxwell+team+headquarters PDF link annotation
    • https://cdn.sqhk.co/delojiwuguj/xbijaia/sugob.pdfIn PDF document text
    • https://cdn.sqhk.co/nojedajoze/Vhjhjyd/zoteguwimigosavezam.pdfIn PDF document text
    • http://kanijakagiw.iblogger.org/countable_and_uncountable_nouns_list_food.pdfIn PDF document text
    • http://mimivudarevi.scienceontheweb.net/midgard_bestiary_pathfinder.pdfIn PDF document text
    • http://rufujatev.iblogger.org/59312548180.pdfIn PDF document text
    • https://cdn.sqhk.co/tazuxalana/qjgKzgj/6408727849.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/91289357321.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/lg_soundbar_nb3530a_mounting_bracket.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/1f868c86-f892-4fee-b61b-51c7439c9111/where_can_i_download_microsoft_access_for_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e7ef329-4d09-4616-9011-4e2fb1d96e2b/origami_tutorial_book.pdfIn PDF document text
    • http://gitodake.myartsonline.com/53678768916.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf739d87-519a-4d3b-b6ba-0b14ddf47fcb/how_to_find_the_zeros_of_a_rational_function.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eab58ecf-2eea-4fbd-ad51-08cb84d8a0b7/what_does_bible_says_about_adultery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/457b330c-fd07-4d01-b65f-7d2f8ce9f9a8/metevedus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc06c89b-a607-464f-8cc5-02bc4fd8dd71/wovapo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00ce1571-7ffc-4302-9be2-88b6cf635a0f/ramen_noodle_cookbook_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e7c1164-f231-4b41-bfed-b396d65f83f1/the_cask_of_amontillado_questions_answer_key.pdfIn PDF document text
    • http://janizopug.epizy.com/burger_king_app_voucher_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b41d78c-105d-453a-a407-ab592037429f/xukiriwozenajekomaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ce4c345-bbc2-4e53-8e73-f7787418660a/moto_g6_play_specs_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96c8fb92-218b-408d-85ae-8759ee2906a9/godedanuvonu.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_off0000f5cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CF 5340 bytes
SHA-256: f6ae8bf3cab3738efa16d9a3d0e4bd9dc6c04b2400e034452905eaaad0be8028
font_01_sfnt_off000107d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D5 11256 bytes
SHA-256: 9db8e6574e51ac77ad43f649464556a771f4cb5bd1775be47aeaae2977a5efd5

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