Malicious PDF — malware analysis report

Static analysis result for SHA-256 609d6906a96195f9…

MALICIOUS

PDF

55.3 KB Created: 2020-11-09 15:16:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: d43ba394674230be635b722a6832d24b SHA-1: 489e975e118331bbe6663cde2bbdf56f7ed2ef63 SHA-256: 609d6906a96195f9d78a9083eaa3d8c36aa00499a421bc0756ec99ccfea7cf97
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://traffking.ru/aws?keyword=stubhub+tickets+legit In PDF document text
    • https://pobafegesodagiz.weebly.com/uploads/1/3/4/3/134305133/kominalim_pupiji.pdfIn PDF document text
    • https://goraworozegisu.weebly.com/uploads/1/3/4/3/134324811/zutopu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fokapikow/loboziwir.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/84950155917.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0efcf04-72a6-4b7d-bcf7-aabe8df6911c/29635816733.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/36197863277.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08809684-8591-4862-b651-9b8ed4d75a6b/42966693596.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/libro_prohibido_enamorarse_de_adam_walker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dc6efab-f497-4d31-bafe-c11154696f93/zimafepovirap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27e53891-9696-4be9-9d15-f675063e4f43/37043747292.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b475756-c626-4bbe-a8f0-4f56acd12277/61029470296.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0db13ee8-f24f-4ccb-87dc-1ef8de4a1bdc/48531917274.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/65893933008.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ce1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE1 4728 bytes
SHA-256: 55254febeba37159cbf863a7d4e962cfcb738fd1b0186d7878137685a9565fbc
font_01_sfnt_off00009d05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D05 10836 bytes
SHA-256: e08c5f0ae2ac532a8a7c99ccde58c773b38bc35a4eefdb81e1dae42ce386d5e8
font_02_sfnt_off0000c221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC221 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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