Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b11bed2cc93cbb6…

MALICIOUS

PDF

44.6 KB Created: 2020-10-15 00:57:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 246d2b2a9107c97946f7b8201d5401b0 SHA-1: c723d77b7cd8ff649417b769471fe23570d9e0dc SHA-256: 6b11bed2cc93cbb6385a176769a0813f363df9ba7b9810eba75b30cb2a7076f1
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/123?keyword=pneumatic+clutch+system+pdf In PDF document text
    • https://vozutadisifik.weebly.com/uploads/1/3/1/4/131483249/3d4d22.pdfIn PDF document text
    • https://vurofagulomefu.weebly.com/uploads/1/3/1/4/131452840/tilabotazigutebade.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/lexenumijosowemakaz.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/e9ff54.pdfIn PDF document text
    • https://site-1043134.mozfiles.com/files/1043134/5538620417.pdfIn PDF document text
    • https://site-1042617.mozfiles.com/files/1042617/vazilibagukinok.pdfIn PDF document text
    • https://site-1038590.mozfiles.com/files/1038590/5407487884.pdfIn PDF document text
    • https://site-1038299.mozfiles.com/files/1038299/12673086237.pdfIn PDF document text
    • https://site-1039355.mozfiles.com/files/1039355/61647476783.pdfIn PDF document text
    • https://site-1037211.mozfiles.com/files/1037211/14458134408.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/1/0498/1889/4498/files/50973214982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/6201/4364/files/rasewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4802/4741/files/xikegixelati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3231/1968/files/dan_beard_council.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2421/0326/files/usa_sex_guide_alaska.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/154b6fd3-7576-4d84-8000-b889a195359f/xipapusime.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b55b6d4-6c41-44f1-bb3d-58582337ba49/lesujawapatezujeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a1d5116-2c47-4ac8-9596-74f32502a44d/nilogukaretopubirigudina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c26da017-2285-4d06-a22a-a78575283122/72424484417.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18187f5f-f693-40b8-9a6f-f3149e1113b8/36220515475.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_off00006e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6B 5404 bytes
SHA-256: 64bd640be72561ab2825f8b47123a323ade28ad05cfd9de7e46b08e954b5bfed
font_01_sfnt_off000080aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80AA 10812 bytes
SHA-256: cf9be13c6b90b80db36e137651f671ea51061e84b50d3f557fa5989207f4e561

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