Malicious PDF — malware analysis report

Static analysis result for SHA-256 b404ada04875322d…

MALICIOUS

PDF

72.2 KB Created: 2021-02-13 11:19:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: acb1213893c02effa18b5e2d72a0067d SHA-1: d3d8e2a62e0189fe0d6ea085e73ba4ad4d9a2aac SHA-256: b404ada04875322d1e396ff24ddd800aa00bfed457fdee409591bf971bfc57b5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://druttle.ru/wix?keyword=moon+in+the+8th+house+astrology PDF link annotation
    • https://rafopotoze.weebly.com/uploads/1/3/4/6/134609035/wiwema.pdfIn PDF document text
    • https://cdn.sqhk.co/ratevusur/7UieXif/idle_landmarks_1._1._5_mods.pdfIn PDF document text
    • https://cdn.sqhk.co/fapetemiji/gdhfig9/72238843842.pdfIn PDF document text
    • http://lianhua.life/facebook_ads_tutorialsdx2a.pdfIn PDF document text
    • https://mekuzawejonoma.weebly.com/uploads/1/3/1/6/131606345/lomekama-wutotaninamo.pdfIn PDF document text
    • http://vkysnaya-eda.site/91390835356548wy.pdfIn PDF document text
    • https://bigufoxorifef.weebly.com/uploads/1/3/1/8/131871864/rumexim-pubotuwiwo-juroxekulikem.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutowede/K9ZhNha/magic_school_story_mod_apk_4._0._50.pdfIn PDF document text
    • https://cdn.sqhk.co/kivuwutu/jgyijhi/cell_biology_genetics_and_evolution_book.pdfIn PDF document text
    • https://cdn.sqhk.co/fogobewataja/V1yjcha/ccm_hockey_mask_covid.pdfIn PDF document text
    • http://fresh-ita.fun/groovemaker_2_freef7zny.pdfIn PDF document text
    • http://bifilazona.22web.org/sairat_full_movie_marathi_720p.pdfIn PDF document text
    • https://cdn.sqhk.co/tovitaxani/gdYIibx/49327097459.pdfIn PDF document text
    • http://velesvoyage.ru/xposed_installer_apk_kitkat_4.4.211a87.pdfIn PDF document text
    • https://cdn.sqhk.co/lovojekaboxi/cOqhfih/viticulture_degree_online.pdfIn PDF document text
    • https://cdn.sqhk.co/pekotegafod/OhejeEb/datozexerozobukifami.pdfIn PDF document text
    • https://zeregosuw.weebly.com/uploads/1/3/6/0/136055393/4011880.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000df7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF7A 5248 bytes
SHA-256: 01db1e7def0364f8d4b3029fd36b941ba132ca35e4385772deb9a7988efc8ea4
font_01_sfnt_off0000f15c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15C 10000 bytes
SHA-256: c9934963dfdf3cad310135bc075931cd694667bfd5ccb12a23d0b1a26961963c

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