Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e917caa56dbb09c…

MALICIOUS

PDF

48.4 KB Created: 2020-10-15 02:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f9dbddc128c7926fed334c8b75e3fefe SHA-1: 2854f53a43f557a3c91dface90539e4aee94f4f5 SHA-256: 8e917caa56dbb09ce06b7acbe4a045337d0b703729afc541d51cd58fc5c2459c
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://cctraff.ru/123?keyword=bordereau+remise+de+cheque+credit+agricole+pdf In PDF document text
    • https://site-1041614.mozfiles.com/files/1041614/xolibikumufi.pdfIn PDF document text
    • https://site-1036880.mozfiles.com/files/1036880/40536654369.pdfIn PDF document text
    • https://site-1043207.mozfiles.com/files/1043207/wusudubedodofixapi.pdfIn PDF document text
    • https://site-1038317.mozfiles.com/files/1038317/japonorakor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_5f877a675242a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f8721e772c67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365583/normal_5f874713bbc45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f877cfea76d1.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/fibawubaxavuvabu.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/5711090.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/nozejiba_riwufovemudes_vodimot.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/1/0430/9850/5377/files/iowa_boee_license_search.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4899/files/venn_diagram_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2675/0881/files/91492384066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4237/3785/files/vuduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4222/5831/files/super_smash_bros_ultimate_unblocked_games_66.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6909/3541/files/nesax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5875/7277/files/70-741_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5098/2805/files/83798163854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1875/0616/files/toramawoletativiluzoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2196/1880/files/75059203986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7819/8462/files/nufigojifuxasevipo.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_off000079b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B3 5744 bytes
SHA-256: c5670b1b98dff2342f37ec42dcba316ddc4845d943654864f2d6416f01252f09
font_01_sfnt_off00008d19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D19 11856 bytes
SHA-256: 036912cddd6bdd5ff2f4e4ba1343291a11b3f7e2e332043d6a2304432a7343c0

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