Malicious PDF — malware analysis report

Static analysis result for SHA-256 630358312fe41e7e…

MALICIOUS

PDF

68.4 KB Created: 2020-10-21 06:10:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d7baca2e2a4590af3991487bd0c37f12 SHA-1: 965f1111c022d13fcd9045feb43e9cb47ff4794e SHA-256: 630358312fe41e7e2392b07ebb6e61c54e55a4cdacb8854ce2453679220d32d1
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/pify?keyword=gerontology+journal+author+guidelines In PDF document text
    • https://tiposowa.weebly.com/uploads/1/3/1/1/131164246/sigakafebido_sebebofezagi.pdfIn PDF document text
    • https://kilejotiwig.weebly.com/uploads/1/3/1/4/131406519/5615738.pdfIn PDF document text
    • https://kuromazu.weebly.com/uploads/1/3/2/6/132695519/buvavixi_murunasuzipezo_jolalonajuporu.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/47de143969989c.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/83905a54a030772.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kadupe_ripovu_jozovagazemewe.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/xadiwuz.pdfIn PDF document text
    • https://folarudivol.weebly.com/uploads/1/3/1/8/131871739/dubesiguk.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/1/0497/5368/6180/files/interphone_f5mc_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5095/6960/files/tozubezefavadax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2000/4761/files/retrovirus_gene_therapy_pros_and_cons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/new_londo_ruins_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/8710/6726/files/bay_area_classical_music.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/aggressive_behaviour_journal.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/86196733578.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/tasonatovixalewakim.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/10318100401.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/pimokozomokubalaga.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/79392425991.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/tovufobilixeref.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f120a391-1cd1-476f-9d3b-d5b4f30d7e78/99649979496.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0c3637a-7de2-49ac-bbf7-821ff1b4495a/53021309602.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dc8a348-53e1-44b1-98d3-988dd3aba4f0/18061216822.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baa63b03-77d4-4b6f-91e7-7187a21bc120/13569853483.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6383f0b2-5750-44f8-9da8-cf4705eb1cee/vivadepizag.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_off0000cc4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC4F 5296 bytes
SHA-256: 6042e85df9fb2cea42d3713204b67e98c413f58745639a1d504c58e90b0433c3
font_01_sfnt_off0000de55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE55 10892 bytes
SHA-256: 4cb3807244c4cea4c25f8c7236ba76b05816b1081b76ed3808a49d944fa43b2c