Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e9a9d27714d0f97…

MALICIOUS

PDF

37.6 KB Created: 2020-11-06 13:56:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: f62151f72d8d8b9382ba7673324058df SHA-1: 0a0a10284eaa309e2d3a1e54795d2bac99cd94e1 SHA-256: 4e9a9d27714d0f970a1242abecab022faf3e99c9be89a28b38cd5fc2e5c43fb0
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=oak+creek+marching+knights+band PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385427/normal_5f96dfefc0b0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383923/normal_5f8d97358fcf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387931/normal_5fa1b38c4c7d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422382/normal_5f9d4d2cd9b79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373304/normal_5f8a50a862cf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392474/normal_5fa41bbc6779d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383445/normal_5f8cb8d1744d2.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/zuxadol/sesobenalemosatabujip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0586/0248/files/word_whizzle_rooster_answers_places_on_the_web.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9218a927-3460-4300-b923-c51d8f5a32b5/libros_de_autoayuda_sexualidad_grati.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/supreme_court_case_study_32_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/739e855e-8ffd-4e47-9ec8-d0587ac50653/navajo_medicine_man_hearing_remedy_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/0084/5248/files/57_chevy_manual_bellhousing.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/25354852087.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_off000052da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52DA 5552 bytes
SHA-256: 83b168cb04f00bcf5aa6209b96d19ae60b25d1783bf841b9d5def312f1a13ecb
font_01_sfnt_off0000658c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658C 10564 bytes
SHA-256: bbd2db437097d854513aa80ff7b3c3945fde9c7780ea4c2091964c2bfdf1ff29