Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6ddc076406bfe77…

MALICIOUS

PDF

69.1 KB Created: 2021-03-20 06:41:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e4e78924caf0fe0a3b6f27eb7239f4f2 SHA-1: ea2f05a87dfaf36d0280770ebcfd39f8b5989c8c SHA-256: e6ddc076406bfe77136c0d605ec190e0a70fc5c26d68280011ba2c6b7037eaa4
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/strik?utm_term=how+to+replace+toner+brother+dcp-l2540dw PDF link annotation
    • http://pimifawimonidij.mywebcommunity.org/how_spell_slots_work_5e.pdfIn PDF document text
    • http://xegazinijitup.mywebcommunity.org/now_taking_boyfriend_applications.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373281/normal_5fcbc657ec4c3.pdfIn PDF document text
    • http://wunadimizurened.medianewsonline.com/wordly_wise_3000_book_8_lesson_11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420905/normal_5fe272692accd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417314/normal_60506213d642b.pdfIn PDF document text
    • http://dobilarujokux.sportsontheweb.net/ordinal_numbers_in_spanish_worksheet.pdfIn PDF document text
    • http://farozemirig.scienceontheweb.net/67820027854.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/boxalewijim/ti_nspire_cx_cas_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecff3198-036a-4679-b375-2772ebbf37b9/bijubu.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/56344412233.pdfIn PDF document text
    • http://jigisasamupor.onlinewebshop.net/xewanedosibegizipisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8262503d-c832-41e0-8b50-f36bdda4df4c/sonny_acres_haunted_hayride_hours.pdfIn PDF document text
    • http://vejegaba.atwebpages.com/tisevedexekexevabidaziz.pdfIn PDF document text
    • http://dasobiviwadodaj.atwebpages.com/what_funny_series_to_watch_on_netflix.pdfIn PDF document text
    • http://nojikigor.myartsonline.com/70408098736.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ccc93ff-fdde-4f81-8cea-758eb6b8a9bb/is_python_is_a_scripting_language.pdfIn PDF document text
    • http://lufevexos.atwebpages.com/lajovokudegidanuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9803725b-b650-4304-8dbd-64473f66ced0/cobra_148_gtl_dx_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34c6c0f9-aca9-4680-b00c-f5da24b2f386/keriredub.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C3 5696 bytes
SHA-256: be3f21917a6c2cd579939237345af1719b03b5e11e10ddfe183c02152a805419
font_01_sfnt_off0000e433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE433 10136 bytes
SHA-256: e1f5fdba8bfa12a4e48a7dbdaf1084972a29e28c728ea314b8f04fcadf58ec22

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