Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bc86035d0456229…

MALICIOUS

PDF

48.4 KB Created: 2020-11-09 15:40:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 766417b8bd5c6865c289c72aa7d8d882 SHA-1: 008bac39c5f189853064d7d201d4be55d9fe2749 SHA-256: 0bc86035d0456229e4dfdc39c7c703c61aefaf5a635b8938cd65e7d68ae075a2
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://trafffi.ru/123?keyword=oasis+c2+guidance+manual+chapter+3 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4391047/normal_5f9ab49a8ba58.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/mabuvujo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381751/normal_5f94c044d0444.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5f9807cab10d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368984/normal_5f93568f2dcd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392666/normal_5f9c53664ac6d.pdfIn PDF document text
    • https://tetagusupawuwag.weebly.com/uploads/1/3/4/5/134586179/4f281018907e26.pdfIn PDF document text
    • https://vuxutuwatojo.weebly.com/uploads/1/3/4/6/134625262/2453b.pdfIn PDF document text
    • https://fukubumo.weebly.com/uploads/1/3/4/0/134016705/rogepega_zinaru.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://uploads.strikinglycdn.com/files/cf5ceb24-5eeb-4659-a8a2-164ca466be69/kewub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/173c4f98-46cb-4b80-aea0-dad0a3b2f541/halti_harness_training_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd8902e8-e7e3-4efa-b81e-77fb67d1c79c/how_to_play_pokemon_with_friends_on_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/fernando_pessoa_poems_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cde3b98a-9ee1-450f-93f2-4ccc469e2331/72733493607.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f14c4e98-1a00-40aa-9392-4d41cb95937c/gebufekot.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/eric_braeden_wife_age.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_off00007046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7046 5584 bytes
SHA-256: e0f43f365f647cf2d06340fce2e69d45ea06b78caf623c234be5e1d767aa6e6c
font_01_sfnt_off0000830b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x830B 10540 bytes
SHA-256: a66bdef22b8fbf99e33d33e09b39ccfea3e02bab63be2dadfc6f73b05e21df75
font_02_sfnt_off0000a6d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D2 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f