Malicious PDF — malware analysis report

Static analysis result for SHA-256 53127c2f382f9bc4…

MALICIOUS

PDF

71.1 KB Created: 2021-01-26 20:26:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 426396f668d6fe83a761017fcf07b94b SHA-1: 7232485bf62173a9fff2a9eb135c19c8af4da296 SHA-256: 53127c2f382f9bc4f38d7c58d96967652eb964e7b31e5d7d6431f6712aee008f
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jacksth.ru/wb?keyword=general%20knowledge%20quiz%20questions%20and%20answers PDF link annotation
    • http://vinnipoh.space/jekilejegej1latt.pdfIn PDF document text
    • https://bikonate.weebly.com/uploads/1/3/4/7/134715396/1782863.pdfIn PDF document text
    • https://sigiduba.weebly.com/uploads/1/3/1/3/131384121/pazubofapuzuzalepe.pdfIn PDF document text
    • https://cdn.sqhk.co/webuzifinuno/0vU2Z81/sisters_apparel_butterfly_collection_prices.pdfIn PDF document text
    • http://opit.space/card_matching_game_online4e9eo.pdfIn PDF document text
    • http://help-copyrightviolationhelpcenter.com/18128800580vua34.pdfIn PDF document text
    • https://xubivotalo.weebly.com/uploads/1/3/0/7/130775972/1623665.pdfIn PDF document text
    • https://kelezisexuva.weebly.com/uploads/1/3/0/7/130739204/fotifax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366632/normal_600ade757a3a0.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/megulu/lovakaxatafejenapegaxif.pdfIn PDF document text
    • http://tufukupetateto.epizy.com/15298443240.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/xituleworilu.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/guxewukoregevisomupuv.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/8218197621.pdfIn PDF document text
    • http://lunofalogejutu.epizy.com/gandhi_autobiography.pdfIn PDF document text
    • http://zepaxawom.rf.gd/tifijatimunupiwapufaxasis.pdfIn PDF document text
    • http://foweroboxufafuv.epizy.com/cambridge_international_school_coed_jalandhar_app.pdfIn PDF document text
    • http://gakupoxefale.epizy.com/free_editorial_calendar_template_2018.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_off0000d9a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A0 5356 bytes
SHA-256: c20376d09947186c6bbba9ce58d31b1906b88e75622ab7f9609fc8f74b0d255d
font_01_sfnt_off0000ebfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFD 10396 bytes
SHA-256: 78411937af57cf7b4c17c7cc1629d88b5d3f7817a0311e1b4224e7b573abaeba

Open this report in the interactive analyzer, or submit your own file for analysis.