Malicious PDF — malware analysis report

Static analysis result for SHA-256 eafb0db98c7e3e6a…

MALICIOUS

PDF

94.3 KB Created: 2021-03-01 05:06:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 22431e73bbbb8fbae08756579429e8b2 SHA-1: d6013ad86e6bac1b365ca0bbe51ea1166120de3e SHA-256: eafb0db98c7e3e6a74e31d804bdaa46f5b49de26f4b7645917ef9b4457a95292
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://midufefew.ru/award?keyword=what+societies+does+cultural+diffusion+occur PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4444358/normal_5fe5490247ca8.pdfIn PDF document text
    • https://mumovukejepi.weebly.com/uploads/1/3/1/4/131483147/vibebe-japarugateboru-ritofalezama-goxiwivuw.pdfIn PDF document text
    • https://nimimetifav.weebly.com/uploads/1/3/2/8/132814674/9336721.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379606/normal_5ff5c3bd28964.pdfIn PDF document text
    • http://nageramuvepom.mywebcommunity.org/banikinexonugukogizena.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488332/normal_5fe46c25a26b1.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/f8Rw8SP/to-_do_list_app_for_mac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366024/normal_60092701ac396.pdfIn PDF document text
    • http://zexaribamemavi.sportsontheweb.net/51091183377.pdfIn PDF document text
    • https://kugavulaxux.weebly.com/uploads/1/3/4/4/134454690/f37ec9bf6c0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/simile_and_metaphor_quiz_for_grade_6.pdfIn PDF document text
    • http://tipopetudigovib.epizy.com/cash_flow_projection_template_for_real_estate.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/easy_ratio_math_problems_with_answers.pdfIn PDF document text
    • http://bitenozof.atwebpages.com/descargar_libro_para_aprender_ingles_gratis.pdfIn PDF document text
    • http://salivokeru.epizy.com/liberia_civil_war.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_off00013606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13606 5124 bytes
SHA-256: 464dbdebef05a7f029217130b68751fbd326bf93b6fab0e812e90211a0d60144
font_01_sfnt_off00014775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14775 10704 bytes
SHA-256: 57721f574678e9f884ffc82626010f5d1b8b12931cd11c7bc712392f1dc5f163