Malicious PDF — malware analysis report

Static analysis result for SHA-256 49d76795e84e7b7d…

MALICIOUS

PDF

44.9 KB Created: 2020-08-18 13:15:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9a45409b23caabed5d3f02044a514179 SHA-1: bdaf998de0f39043cbdc083877560ef1172b6abc SHA-256: 49d76795e84e7b7dd1fcc9595072bec49fd152f6f1d0ef3b17ca5b4138b13b61
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.cc/pify?keyword=waste+watch+interactive+sorting+guide In PDF document text
    • http://files.jessicaleemanton.com/uploads/1/3/0/9/130969300/dafipapamipewezam.pdfIn PDF document text
    • http://files.williamogmundson.com/uploads/1/3/0/8/130813526/wefixanuwumol-lizitejetivak.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/1/0439/0541/7371/files/calculating_area_of_irregular_shapes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5861/6733/files/sawijoripamikuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7996/6628/files/408261097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2175/7590/files/71769029235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24370467333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1262/6344/files/fekabatedel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7287/9782/files/rexisavifurowuxadane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0755/7275/files/13442318021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8671/6830/files/82369750286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3845/7508/files/35574597839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2047/6828/files/xesajifolowuwodiramabixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5045/1623/files/97110277454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9005/9157/files/cheats_cookie_clicker.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_off00006e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9F 5332 bytes
SHA-256: 177b1d736f73d017509411f64fb5a5157f8bdb612ae2b4bb46876f72f7a697a5
font_01_sfnt_off000080c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C8 11024 bytes
SHA-256: 66b663a597546f727649d5e50bb2c7565a461d7c23516879f44107b8aaa1230a

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