Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bd531ad050f015b…

MALICIOUS

PDF

45.6 KB Created: 2020-11-06 03:08:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 093aa6a9e9bde6988db2265e4bde2837 SHA-1: 6fefba2bf65ab5ff59621d8449242b9cdc6b328d SHA-256: 7bd531ad050f015b1866dea0fadd11baa27156ea5b9b718c9753c1673b9c6072
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/123?keyword=godfather+cast+3 PDF link annotation
    • https://jebezowurexa.weebly.com/uploads/1/3/4/5/134576847/madusumunoninisoz.pdfIn PDF document text
    • https://kukezuleji.weebly.com/uploads/1/3/4/3/134361302/4b831fbabe4ca.pdfIn PDF document text
    • https://mekukirofex.weebly.com/uploads/1/3/4/5/134589797/zosusaxob-bajokesepu.pdfIn PDF document text
    • https://mogezisatizate.weebly.com/uploads/1/3/0/7/130775403/0294a1ec9a4076.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388598/normal_5f8f70f02a7da.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/e5300448-ed6e-48c8-9cca-0cf8bab37171/bebafugukozov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/214239af-b97c-4bfd-a156-5ad4ec597f8b/jewidomupolobigi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15060289-efe4-448e-8bbb-12db554f6c7c/virtual_machine_on_chromebook.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_off00007428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7428 5272 bytes
SHA-256: 347f1e998726a1635ab0309126324a9233e232bbd4de7bf31a2471c1cba761e2
font_01_sfnt_off00008613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8613 10764 bytes
SHA-256: d71ffa2ca25d89526e5876c78e776263e02394915aabcbae9a252336d70ac2a0

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