Malicious PDF — malware analysis report

Static analysis result for SHA-256 b080b0824203de9f…

MALICIOUS

PDF

48.7 KB Created: 2020-10-05 07:25:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e185e2cf9b098fa7338c5e4e6ac5b180 SHA-1: e2a75108802661c86702e4eadd69b6326e804de2 SHA-256: b080b0824203de9f1ed481e25e00344f6804580d1132d2cd8c0b4b5c39907c9d
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://ggtraff.ru/strik?keyword=90+day+fiance+season+7+episode+guide In PDF document text
    • http://files.eliteladiesfashion.co.uk/uploads/1/3/2/6/132682070/dilonodemale.pdfIn PDF document text
    • http://nuvuvutu.highprimeproperties.com/uploads/1/3/0/8/130813606/gowoxixawaxif-rigonatefaxo.pdfIn PDF document text
    • http://files.unbarbadosandoecs.org/uploads/1/3/0/7/130740624/nasuwi.pdfIn PDF document text
    • http://dixaxasa.ruralactioninternational.com/uploads/1/3/1/8/131856725/0b9758b4099.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/clash_of_clans_apk_here_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6453/2900/files/minecraft_0_8.1_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8221/9674/files/commercial_electrical_load_calculation_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7481/7693/files/application_of_linear_equation_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9727/5033/files/louisiana_medical_board_license_renewal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4c016d5-011a-4bde-8135-06f6203e6b03/51599585792.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d64b66c-0788-4cbb-84ac-12f0ca6e242a/39595632246.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96e5f410-b60f-4a47-b74f-0631dcd0335d/6449391787.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/384a0d9a-8f05-4cc9-b024-e1f2a5eb755d/27965444264.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/161635a7-8a55-44f4-a36f-3f7e68693e47/83780238595.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68BB 5580 bytes
SHA-256: 4e8bf2e0ff2e5be92f40d1a59f8879229f83feaf4080f703ec31ebc78ecacad3
font_01_sfnt_off00007be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE3 10912 bytes
SHA-256: 2f97a63d3b11214a2b79ac3d4f9c585cef92374239aa39856754fd4197b9812b
font_02_sfnt_off0000a163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA163 16036 bytes
SHA-256: 149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1

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