Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b2d7433e04ef249…

MALICIOUS

PDF

35.2 KB Created: 2020-10-07 09:31:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-19
MD5: b36f3b93f32d4a70e3f1d3c368800749 SHA-1: ed44674efa42c06d03987aad68d73b789895f87f SHA-256: 0b2d7433e04ef2490cbe6a72faec2def4fd32755c66b4f18c0586300314a2f6d
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=el+infierno+pelicula+completa+en+espa%25C3%25B1ol In PDF document text
    • https://site-1040800.mozfiles.com/files/1040800/kebenunelijusomopesu.pdfIn PDF document text
    • https://site-1038770.mozfiles.com/files/1038770/42739327983.pdfIn PDF document text
    • https://site-1037867.mozfiles.com/files/1037867/bixijoleloxesiwatirod.pdfIn PDF document text
    • http://files.thevikinglawyer.com/uploads/1/3/0/7/130740438/tiniwikasomupedibu.pdfIn PDF document text
    • http://mosuv.grimoirtua.com/uploads/1/3/0/9/130969937/poxixozuwajij.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a50b2431-c8e1-45a0-8882-3459571f4369/26693139925.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d9271ba-0c2e-420a-8922-2b7c6f75f173/71470287167.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10b0a7d0-4f16-4815-9929-6b71996fbbe4/11906640199.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3aeee01-06b0-4d7e-b1e8-76507aba1833/xeriwoxasojuvemavasup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4754ff1-7f3d-4613-929d-6da851a3ff54/10177059498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0029/4308/files/scientific_method_story_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7006/0704/files/sanulovetila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0698/3829/files/worst_kitchen_nightmares_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5800/3607/files/zegomuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7106/9594/files/70135675385.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_off00004892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4892 5328 bytes
SHA-256: 895a94f2765b1cba23e7adbddcbd2d949f962a1aee27cc3fcb9040dfdd219244
font_01_sfnt_off00005a60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A60 10952 bytes
SHA-256: 5d6e31b1ad61f1f9780b51a63a358eb00dc3466160b6ccc5ff78a4a79944dfb5

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