Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ce43e0bc90bf356…

MALICIOUS

PDF

69.6 KB Created: 2021-03-02 17:26:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2820e8eb3ab9db8c0b2c21a378614660 SHA-1: c6722aaaa472d802ef51844baa44d0d440c49012 SHA-256: 1ce43e0bc90bf356a699c07eb0fec6dc4c37c5217894fa94c34888caba152aef
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://xajibur.ru/wix?keyword=tyrone+ok+school+calendar PDF link annotation
    • https://getezulesu.weebly.com/uploads/1/3/1/0/131071231/debifefemeba.pdfIn PDF document text
    • http://nanebaxexob.getenjoyment.net/why_is_my_hp_envy_printer_not_printing_in_color.pdfIn PDF document text
    • https://piziruzebizopu.weebly.com/uploads/1/3/4/3/134350425/4272912.pdfIn PDF document text
    • http://poradoit1.site/p90x_nutrition_planha1zz.pdfIn PDF document text
    • https://tizidebiwefixim.weebly.com/uploads/1/3/0/7/130739379/3511495.pdfIn PDF document text
    • https://vuzaruluweketex.weebly.com/uploads/1/3/4/4/134478477/baxosotowozowu_maxeke.pdfIn PDF document text
    • https://vozozexofevufut.weebly.com/uploads/1/3/1/8/131871902/591835.pdfIn PDF document text
    • https://durapafived.weebly.com/uploads/1/3/1/4/131438767/dc9ad599.pdfIn PDF document text
    • http://pevazaw.mypressonline.com/sawagusebab.pdfIn PDF document text
    • http://detonic-italy.website/coordinates_worksheet_year_9r9ls9.pdfIn PDF document text
    • https://zefijevizo.weebly.com/uploads/1/3/2/3/132302816/rufopilazobadevuto.pdfIn PDF document text
    • http://armada.technology/xugezekujikudifobarepfo56l.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/zomuzigo/new_product_launch_powerpoint_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/craziest_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/talox.pdfIn PDF document text
    • http://rulamiji.onlinewebshop.net/23814233332.pdfIn PDF document text
    • http://jotudokizer.onlinewebshop.net/neil_degrasse_tyson_podcast_joe_rogan.pdfIn PDF document text
    • http://ranitirunom.myartsonline.com/resolucion_de_ecuaciones_de_primer_grado_con_2_incognitas.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/what_is_the_next_book_series_after_trials_of_apollo.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_off0000d398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD398 5140 bytes
SHA-256: 271b5d893b72f46db4d7f3ddbaa655ab8534eaec3a2bf3b9aea5f544eb89a0db
font_01_sfnt_off0000e517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE517 10508 bytes
SHA-256: 8a71f9da2080e95f705b39a741a682813935e2ed44333c94068b07abb1048cd5