Malicious PDF — malware analysis report

Static analysis result for SHA-256 97011aa49afc4ca6…

MALICIOUS

PDF

67.2 KB Created: 2020-11-08 03:53:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 0d07f1b6abbebe3500c06810119c99c4 SHA-1: 7b8ea0436560e350a2fb4493b015959f4a8cf618 SHA-256: 97011aa49afc4ca6d72e373f14560e250b61292f1e80bbca57dc401336307622
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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/aws?keyword=c+est+pas+bien+9 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454694/normal_5fa74a4b8d71c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446647/normal_5fa602e5e09ed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://tufebofajo.files.wordpress.com/2020/11/9092157610.pdfIn PDF document text
    • https://pomobuvumedu.files.wordpress.com/2020/11/microscope_rpg_download.pdfIn PDF document text
    • https://demoxugu.files.wordpress.com/2020/11/amasya_genelgesinin_tarihi.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/52524640000.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/biblia_jerusalen_descargar.pdfIn PDF document text
    • https://matodokabaj.files.wordpress.com/2020/11/91538275913.pdfIn PDF document text
    • https://gubazagodata.files.wordpress.com/2020/11/obesity_code_audiobook.pdfIn PDF document text
    • https://nefunifobow.files.wordpress.com/2020/11/air_pollution_control_a_design_approach_4th_edition_download.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/class_cestoda.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/dediwodeguvotasarejoj.pdfIn PDF document text
    • https://zefegize.files.wordpress.com/2020/11/titans_season_2_torrent.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC9 16764 bytes
SHA-256: e7dd8cac37f18a4d28a7605b0c28eaecb6a581af2ed62d0077f14aac793cf8ef
font_01_sfnt_off0000a563.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA563 4888 bytes
SHA-256: 3f97dad69b050b6a7eb0056dd7452e9415eed77d10a93aee337778954b3639f6
font_02_sfnt_off0000b5fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5FD 1688 bytes
SHA-256: fdd010fe1288ad0f1c9bee90bbeb17398d0e100568cbd0010a152cf4751e8d4b
font_03_sfnt_off0000be67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE67 13212 bytes
SHA-256: f9e80e5d692d4580479e2b513dd2592f8dc91979ea0ddb735a79501523a0a40e
font_04_sfnt_off0000e804.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE804 16312 bytes
SHA-256: bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939