Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf6a7bc6a2981980…

MALICIOUS

PDF

38.6 KB Created: 2020-10-30 14:32:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 6e0626bb3a57413fdd348e27875917ef SHA-1: 75d71cc53eb7b8c49c58dbe19da2ee688d20e32d SHA-256: bf6a7bc6a29819807fc6c1af0643d17c9067949b0d7ca815e2c4f70cbe007ada
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://ttraff.me/pify?keyword=ib+dihybrid+cross+involving+linked+genes In PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/luwifidaxezu.pdfIn PDF document text
    • https://turikiripejuz.weebly.com/uploads/1/3/4/5/134501804/8544432.pdfIn PDF document text
    • https://senapuvuv.weebly.com/uploads/1/3/4/4/134459053/c42f3b23afb.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/1/0435/4244/6231/files/basic_of_electrical_engineering_download.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/penusema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af187a2c-0f7f-493d-bbcd-436ebdaf5b4d/nugofixawofirapoxetix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62e3e52b-87c0-47d5-8237-8c0e10bdc77f/30342293800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4105/4105/files/criminal_case_save_the_world_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4171/6906/files/bawenowifegiwuxibo.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_off000058cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58CF 5292 bytes
SHA-256: f0274a9720d73ec60ae85b79fc3006bcdb4eb42efb8b4d248b8b9979f3dbe4c9
font_01_sfnt_off00006ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD8 9784 bytes
SHA-256: ad4efa12eb8d7b14bd52d6fe5ffe12054d458ddaf06d8a049d3dac52ced8dea5

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