Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd380583ff1b3f9f…

MALICIOUS

PDF

45.2 KB Created: 2020-10-16 05:35:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 44f06ad3651028b706517ac868b4f5c1 SHA-1: 79da1579738ff977c475fbd0f7a5ac7e6e605675 SHA-256: bd380583ff1b3f9f4b26b8d3b6769aaecbab97b011d0671f1b99aa727914b2d8
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.club/pify?keyword=ielts+8+listening+test+2+pdf In PDF document text
    • https://site-1038337.mozfiles.com/files/1038337/5005317870.pdfIn PDF document text
    • https://site-1043491.mozfiles.com/files/1043491/84601917897.pdfIn PDF document text
    • https://site-1041404.mozfiles.com/files/1041404/vamomovoluxi.pdfIn PDF document text
    • https://site-1038949.mozfiles.com/files/1038949/rogaxovoj.pdfIn PDF document text
    • https://site-1039806.mozfiles.com/files/1039806/labores_culturales_del_banano.pdfIn PDF document text
    • https://site-1043335.mozfiles.com/files/1043335/facebook_messenger_application_for_android.pdfIn PDF document text
    • https://site-1036730.mozfiles.com/files/1036730/zidanup.pdfIn PDF document text
    • https://fagisidide.weebly.com/uploads/1/3/2/6/132682833/665fe42a58.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/3032384.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/1399213.pdfIn PDF document text
    • https://topodomero.weebly.com/uploads/1/3/2/6/132696018/nulazot.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/ae8ac0a9-0446-4ed4-9b93-e9a43f97a431/jagenofadunukelafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4982a32-6b73-43c4-9589-910bb7b9a09c/14516369325.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1dabb16-a7ff-4b07-9a6d-727c244a45d1/sobakedesebaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6700/2020/files/9711380372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3911/6440/files/american_heritage_charter_school_jobs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5377/7047/files/93653621638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1714/1909/files/273443323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7239/6193/files/kepogokemevolufugarog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3972/6487/files/wp_launcher_8_pro_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9353/3886/files/ucsd_cse_191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7624/files/john_wick_shirt_be_kind_to_animals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/4703/0436/files/bixow.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_off00006a18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A18 5168 bytes
SHA-256: 569f0877b69b3b5f0f6a2a259b33d1e35caa64d509c0d9b480342a7f4ba0f085
font_01_sfnt_off00007bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC2 13672 bytes
SHA-256: 3da9d2f32591469cef9e7987a95c8e08a4a27608028a4f06987d9fdcd4f2fa3a

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