Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ec934a8abcb6fd…

MALICIOUS

PDF

44.6 KB Created: 2020-10-16 11:32:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1eb675d6a61781163e47016591efceb5 SHA-1: 71bbdd6d3e7bf5ebf144075b9a83574bc669787e SHA-256: f3ec934a8abcb6fd4deb2dbe0e04283ace7af25b98030474245d17abbed0ca54
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://gettraff.ru/123?keyword=aprendizaje+repetitivo+o+memoristico+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368982/normal_5f8808f68be4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368781/normal_5f89176a6e19b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f87f2dfd6feb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369630/normal_5f88b95381387.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/8250183.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367944/normal_5f8758b34696b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5f87559db42dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366358/normal_5f8751ca358cf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/3685/2391/files/40x_escape_level_13_answer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2287/6324/files/how_to_get_free_fortnite_accounts_legit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/6651/1526/files/bonaire_dive_sites.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7806/2758/files/woman_body_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6976/7321/files/minute_of_angle_wiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7204/4187/files/70991343572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7864/2581/files/ben_franklin_the_office_imdb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0853/8262/files/90591299612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9259/9193/files/56361122307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6845/6102/files/nikon_d3000_lens_compatibility.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e87c7f7a-02b5-4ecf-ba42-f9a7d884deb5/janedaxujejijazig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4eec3f4-2183-4942-b8dd-0f600c125cc0/28244092180.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49776248-2fde-43c7-94bf-fdba245d9a08/widazokike.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09fed3eb-1152-4d03-a459-3bfd63a31a62/57594147386.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_off00006d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D56 5444 bytes
SHA-256: f19dd58f702a346a6124f8d61c039abe48bde9db3fadf1da6a617f8a2f67f190
font_01_sfnt_off00007fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD1 10868 bytes
SHA-256: 1260906150485c023ecbb39ffb6b95c72d95336f5d2a6caffbf7cb0fc03f6220

Open this report in the interactive analyzer, or submit your own file for analysis.