Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbed985ecbc58028…

MALICIOUS

PDF

39.3 KB Created: 2020-11-06 11:39:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 46a00fada3c2ce931399b5a5da6dc6c9 SHA-1: e8c4cfb677a7d11b27818040c0c9b065045cf4b5 SHA-256: fbed985ecbc58028e7e4600190e5328573257d98523258d1837491c2865bf1e5
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://traffset.ru/123?keyword=words+with+ic+in+them PDF link annotation
    • https://logukevagas.weebly.com/uploads/1/3/4/5/134507161/vexasuvogopud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370744/normal_5f8a9da01982d.pdfIn PDF document text
    • https://toreliga.weebly.com/uploads/1/3/4/3/134335880/josunajomiwikariv.pdfIn PDF document text
    • https://baxojozejaxofo.weebly.com/uploads/1/3/4/5/134586757/nemudesedolanifopud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379230/normal_5f8c6a84d5939.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383446/normal_5f9c26e07a123.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418178/normal_5fa32ed462db3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378149/normal_5f9fd49a57868.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/3686c593-5908-4c5a-8c0c-a26a3197ea5b/nuwobinewusumasogazun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/705c2035-1867-404f-9562-322e2959b8ad/deviantart_free_sai_download_full_version.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_off00005893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5893 5040 bytes
SHA-256: 8ca9cb813f12aae3f7a0307490f8da995e350c04d1451db22dd9c3a97e039c43
font_01_sfnt_off000069a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A7 12576 bytes
SHA-256: 97044c19f45c6ee02285b97c58b56a1045cfadfaf8420a117194f262de7ab1d9

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