Malicious PDF — malware analysis report

Static analysis result for SHA-256 7040898739d4fa3b…

MALICIOUS

PDF

34.8 KB Created: 2020-10-03 09:22:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 48fe382cd85f21ab556ba5eb5d8ba9a8 SHA-1: ddbdf071caebeac122396399a0be8bc0787cb4c3 SHA-256: 7040898739d4fa3b56f7ce2e0b9570644db22e51ee1298c39546f9d48fb84932
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/strik?keyword=abrsm+saxophone+syllabus+2020+pdf In PDF document text
    • http://turofovol.gethincoolbaugh.com/uploads/1/3/1/3/131398091/xijutura.pdfIn PDF document text
    • http://files.garykolb.com/uploads/1/3/1/3/131383204/zexojen.pdfIn PDF document text
    • http://sozatuxi.christcommunityinternational.org/uploads/1/3/1/8/131872144/jijipomakaga-poluf.pdfIn PDF document text
    • http://files.spiritualmagic.org/uploads/1/3/1/3/131384300/lomaje.pdfIn PDF document text
    • http://pogediw.tamara-vasquez.com/uploads/1/3/0/7/130776089/3befbb40ebea59.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/1/0431/4526/5318/files/zitamipoxolinejaxipasiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3069/1496/files/4016930890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4823/8241/files/rolex_watch_parts_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9820/5080/files/you_are_your_own_gym_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8037/5708/files/payday_2_dallas_i_need_a_medic_bag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7272/8469/files/tarapemefakikikelifelolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/luzezel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4241/4492/files/55640737203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6933/6471/files/rixigusor.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000499f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x499F 5856 bytes
SHA-256: f6a082ce2dadf1cc23973e09a1ec1fe1210774a8534a8c406f25e153a186e193
font_01_sfnt_off00005d65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D65 9780 bytes
SHA-256: dec2c293214df1dbf4f368d753d24d4aa3c1a36c9ac57e7a119c928647d16a82

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