Malicious PDF — malware analysis report

Static analysis result for SHA-256 3363dea871cffd89…

MALICIOUS

PDF

40.1 KB Created: 2020-11-06 14:47:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 4900b751c16baab099005188f17e90c3 SHA-1: 0656a22e75a525de99f17429fa48683158e9fa88 SHA-256: 3363dea871cffd89900bf53a8be3cfa243f286131cacf591d5641918c7c392bc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffset.ru/strik?keyword=nervios+en+ingles PDF link annotation
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/tabizedime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392444/normal_5f93f40726ad8.pdfIn PDF document text
    • https://kotugelofamoxu.weebly.com/uploads/1/3/4/4/134403640/maweboremelog.pdfIn PDF document text
    • https://zobejonimofov.weebly.com/uploads/1/3/4/3/134354570/c766f09.pdfIn PDF document text
    • https://wawukonuxoni.weebly.com/uploads/1/3/4/0/134095992/6366062.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/wowiput_xixojubajofu_tediseru_bebolivafaku.pdfIn PDF document text
    • https://ritibamubube.weebly.com/uploads/1/3/1/4/131437410/bomegosumenojumez.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/gasipus-wijux.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/ruzumeb/genasi_dnd_age.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/62369953831.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/il-2_tank_crew_on_steam.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/18684267837.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c4e9f85-a1a4-436f-85e7-1da616a90cf6/kibolavoxabo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6d8ac24-078c-423b-9461-3ed65b6054a3/naruto_tailed_beasts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f14c405-58ac-4c4c-9653-739884fd52a9/destiny_2_guide_to_wayfarer_seal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7afa72c4-071d-499d-ac79-c1390e130bfc/68265223207.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cc6aabf-f0a7-4dde-87b3-aadcecded39a/see_listening_ports_on_windows.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_off00005d4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4E 4672 bytes
SHA-256: f5ca917aea193348dfbc36c852c595113629b4dc4ebf435e68706884b0e68c4e
font_01_sfnt_off00006d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D51 11344 bytes
SHA-256: 2f4625b24c29273208e8a9e82be0ecfed1cd78c7a409e008efe6c2a68e14d91b

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