Malicious PDF — malware analysis report

Static analysis result for SHA-256 17a1dac5b4ac80ff…

MALICIOUS

PDF

35.6 KB Created: 2020-11-06 18:21:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-19
MD5: 25fb71126f4778d0971261caeef012c0 SHA-1: edad47e5e624fa2959dce1135bd4cc2a27761cfc SHA-256: 17a1dac5b4ac80ffa0c392d2cd1f114a283f5aade4e37b3fd83c8ce31c1bea59
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?keyword=la+crosse+clock+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378846/normal_5f8ebfd7332ac.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/vilonumuzimudiwujo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379971/normal_5f90bacd4b76f.pdfIn PDF document text
    • https://donokodupotev.weebly.com/uploads/1/3/4/3/134317189/sokasejuzunu-gatuvewokaluvo-pusekuvajorax-memurise.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418583/normal_5f9f0f2fbb7c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366625/normal_5f8d27095e7d0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fasanag/buzanikejijevedal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7f2600c-8b69-4c38-a8b7-089f933d8622/niruwikiwex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd15bb23-47c1-44e2-afd5-3bcde9543023/gebuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01d49e71-a32b-4dca-b225-479aeeb3f7e8/mumezanavelupus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ef63326-68e9-4668-903a-82760984482d/wegagexex.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/mathematics_syllabus_d_book_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53f2b46b-b0d7-4ed1-a36e-fb9d0a6ec22c/begepulegerebivixixi.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_off000050d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50D6 4948 bytes
SHA-256: 4d72cb67b3014eefd3f4705de4497d744c76695ae549b64a0dbd88088f7cab2a
font_01_sfnt_off00006198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6198 9628 bytes
SHA-256: c79c7ffd37fad738973148450d3904f65d9995f311f199d17f21753a8fa5dd2f