Malicious PDF — malware analysis report

Static analysis result for SHA-256 a06006788cc46e9f…

MALICIOUS

PDF

60.8 KB Created: 2020-10-30 22:29:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 67ce5256f2213a3df7ed4fcc1fa41e1f SHA-1: 75e2555bfa2965bd6ad63e396abd28cae8727c68 SHA-256: a06006788cc46e9f39cd383cb0ed77d5d90b846fe316a6a88126d0087fcd0833
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/123?keyword=john%2527s+incredible+pizza+prices+carson In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370092/normal_5f9291101d940.pdfIn PDF document text
    • https://dujopoda.weebly.com/uploads/1/3/0/7/130739119/rejetijetad-golewosazixejup.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/sutudotuvunekor.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/dekefomivupe-kovak-talajonipa-fedebiraroz.pdfIn PDF document text
    • https://fejilezujew.weebly.com/uploads/1/3/4/3/134340931/2019120.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/gewizojule.pdfIn PDF document text
    • https://vunixumo.weebly.com/uploads/1/3/1/4/131453253/47df3d232c22a.pdfIn PDF document text
    • https://buwupejobo.weebly.com/uploads/1/3/4/2/134265589/8652378.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/bewobabotidigeb_tunenijidivazuf_matafeme_tipisiditenevaw.pdfIn PDF document text
    • https://naxesitigas.weebly.com/uploads/1/3/0/7/130740165/nizeke.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/fasanag/15979460298.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/temple_architecture_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/microbial_ecology_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/assertiveness_skills_training.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/hikvision_ip_camera_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/antologias_de_cuentos_de_terror.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_off0000adb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADB8 5372 bytes
SHA-256: 9e13dc07163bf24785270f28f760be49fe78b16a18e10ab1534c9f2e42ff4c96
font_01_sfnt_off0000bff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFF9 11224 bytes
SHA-256: 9ed5e5387d7818ce37385fac41f4fdc3d12ad1696468b6878efd0b5f61db10b2

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