Malicious PDF — malware analysis report

Static analysis result for SHA-256 06633dd89c6e2cc9…

MALICIOUS

PDF

78.2 KB Created: 2021-02-27 21:26:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e5defa1a440650b7c3a0c4359263b564 SHA-1: ca2e9f4bea3e15a9ba6f12196fda037a3e021f4a SHA-256: 06633dd89c6e2cc98df2f302bb47138f683e376ddb132239bd126c0f5af50c74
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/award?keyword=cursos+de+ingles+en+houston+texas+gratis PDF link annotation
    • http://zelopaqq.xyz/69756445959kyge4.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/25098627368.pdfIn PDF document text
    • https://jegivobepumo.weebly.com/uploads/1/3/4/4/134444156/1b6aee2ac4c.pdfIn PDF document text
    • https://faxasuxudoxo.weebly.com/uploads/1/3/2/6/132695360/zenasilona.pdfIn PDF document text
    • http://nibodilakiwote.22web.org/high_standard_serial_number.pdfIn PDF document text
    • http://wide-mean.top/sensory_processing_disorder_special_education_eligibility12l7i.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/heat_exchanger_furnace_price.pdfIn PDF document text
    • https://mizavuzozubex.weebly.com/uploads/1/3/4/7/134730625/zupiwe-kenexigawoxivot.pdfIn PDF document text
    • https://vagewojevibo.weebly.com/uploads/1/3/4/8/134873572/1a2cd63.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490371/normal_5ffdc7700a1b5.pdfIn PDF document text
    • https://dorijalasenotom.weebly.com/uploads/1/3/5/3/135327318/vebirofufoxe.pdfIn PDF document text
    • http://kadaxejob.mypressonline.com/godovezebugepaxuganuxipi.pdfIn PDF document text
    • http://trynutra.shop/how_to_calculate_rpn_in_fmeasqjbp.pdfIn PDF document text
    • https://sagagedonu.weebly.com/uploads/1/3/4/0/134017332/7745213.pdfIn PDF document text
    • http://pofuxubilet.sportsontheweb.net/kuruvikipizanigabipor.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_off0000f2ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2ED 5060 bytes
SHA-256: 0ff698a419819405574c73706d817c3919dcba8aa7d5f89e9848973396fe2114
font_01_sfnt_off00010414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10414 11648 bytes
SHA-256: d561b99bc7af1fc69459ff56d8ea60d743cabcde575419d732adb3a1735aaee2