Malicious PDF — malware analysis report

Static analysis result for SHA-256 0466f874693fca7f…

MALICIOUS

PDF

42.7 KB Created: 2020-10-08 15:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 499bb7435853e5bfb1e7ba2bcd12337f SHA-1: e7cacabe8768313113b188da0c1dd735f9a3aace SHA-256: 0466f874693fca7f159e547250e4f9384bffd0e348252562bb109247024dd499
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/strik?keyword=hip+fracture+classification+pdf In PDF document text
    • http://files.littlebitofcinnamon.com/uploads/1/3/1/4/131438843/8296903.pdfIn PDF document text
    • http://lozekazus.chatswoodhspdhpe.com/uploads/1/3/1/6/131636644/gazilisigusisas_bagukepepe_jafuvutexafixa_maxonakop.pdfIn PDF document text
    • http://files.crosshomesolutions.com/uploads/1/3/1/4/131437249/8262e.pdfIn PDF document text
    • https://site-1039427.mozfiles.com/files/1039427/61283052534.pdfIn PDF document text
    • https://site-1043091.mozfiles.com/files/1043091/buzababixagezuwaponis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1edeb391-6975-4de8-8a82-ed1bbc40b498/91745161527.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f44353a5-b899-4257-a052-971e61a8640f/sifuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/562011ba-ed67-4e69-897a-d8427d96a693/79619893818.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93355365-8303-4884-8905-b5b1071d715b/zebizaxosireromukameko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e180d95d-05c2-49fb-be7e-562b1a6e1182/wikepegewemukiwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e64e8eea-bebc-4ea0-bcc7-b4a4b06dac9b/47271215282.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0de3f574-f259-4380-b008-a215217e7659/suraxijirebogesovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5c58507-03cb-40f6-96a9-970f00c2f470/71448266131.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8366fa46-1285-4143-a8b9-f462a54e21e1/37119991222.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 1

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_off0000689f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x689F 5112 bytes
SHA-256: 34bb6c4b58e684e6f10cca323eb232f6155f5bf39ca073c02f28e40c54f2702f
font_01_sfnt_off00007a12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A12 10668 bytes
SHA-256: 783fb43701c2cabc2ad286def08c7761f5a37b5907cfbdf038cf3651437b8ca4

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